drivers/net/ethernet/mellanox/mlx4/en_netdev.c

   1 /*
   2  * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  *
  32  */
  33
  34 #include <linux/bpf.h>
  35 #include <linux/etherdevice.h>
  36 #include <linux/tcp.h>
  37 #include <linux/if_vlan.h>
  38 #include <linux/delay.h>
  39 #include <linux/slab.h>
  40 #include <linux/hash.h>
  41 #include <net/ip.h>
  42 #include <net/busy_poll.h>
  43 #include <net/vxlan.h>
  44 #include <net/devlink.h>
  45
  46 #include <linux/mlx4/driver.h>
  47 #include <linux/mlx4/device.h>
  48 #include <linux/mlx4/cmd.h>
  49 #include <linux/mlx4/cq.h>
  50
  51 #include "mlx4_en.h"
  52 #include "en_port.h"
  53
  54 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
  55 {
  56         struct mlx4_en_priv *priv = netdev_priv(dev);
  57         int i;
  58         unsigned int offset = 0;
  59
  60         if (up && up != MLX4_EN_NUM_UP)
  61                 return -EINVAL;
  62
  63         netdev_set_num_tc(dev, up);
  64
  65         /* Partition Tx queues evenly amongst UP's */
  66         for (i = 0; i < up; i++) {
  67                 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
  68                 offset += priv->num_tx_rings_p_up;
  69         }
  70
  71 #ifdef CONFIG_MLX4_EN_DCB
  72         if (!mlx4_is_slave(priv->mdev->dev)) {
  73                 if (up) {
  74                         priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
  75                 } else {
  76                         priv->flags &= ~MLX4_EN_FLAG_DCB_ENABLED;
  77                         priv->cee_params.dcb_cfg.pfc_state = false;
  78                 }
  79         }
  80 #endif /* CONFIG_MLX4_EN_DCB */
  81
  82         return 0;
  83 }
  84
  85 static int __mlx4_en_setup_tc(struct net_device *dev, u32 handle, __be16 proto,
  86                               struct tc_to_netdev *tc)
  87 {
  88         if (tc->type != TC_SETUP_MQPRIO)
  89                 return -EINVAL;
  90
  91         return mlx4_en_setup_tc(dev, tc->tc);
  92 }
  93
  94 #ifdef CONFIG_RFS_ACCEL
  95
  96 struct mlx4_en_filter {
  97         struct list_head next;
  98         struct work_struct work;
  99
 100         u8     ip_proto;
 101         __be32 src_ip;
 102         __be32 dst_ip;
 103         __be16 src_port;
 104         __be16 dst_port;
 105
 106         int rxq_index;
 107         struct mlx4_en_priv *priv;
 108         u32 flow_id;                    /* RFS infrastructure id */
 109         int id;                         /* mlx4_en driver id */
 110         u64 reg_id;                     /* Flow steering API id */
 111         u8 activated;                   /* Used to prevent expiry before filter
 112                                          * is attached
 113                                          */
 114         struct hlist_node filter_chain;
 115 };
 116
 117 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 118
 119 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 120 {
 121         switch (ip_proto) {
 122         case IPPROTO_UDP:
 123                 return MLX4_NET_TRANS_RULE_ID_UDP;
 124         case IPPROTO_TCP:
 125                 return MLX4_NET_TRANS_RULE_ID_TCP;
 126         default:
 127                 return MLX4_NET_TRANS_RULE_NUM;
 128         }
 129 };
 130
 131 static void mlx4_en_filter_work(struct work_struct *work)
 132 {
 133         struct mlx4_en_filter *filter = container_of(work,
 134                                                      struct mlx4_en_filter,
 135                                                      work);
 136         struct mlx4_en_priv *priv = filter->priv;
 137         struct mlx4_spec_list spec_tcp_udp = {
 138                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 139                 {
 140                         .tcp_udp = {
 141                                 .dst_port = filter->dst_port,
 142                                 .dst_port_msk = (__force __be16)-1,
 143                                 .src_port = filter->src_port,
 144                                 .src_port_msk = (__force __be16)-1,
 145                         },
 146                 },
 147         };
 148         struct mlx4_spec_list spec_ip = {
 149                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 150                 {
 151                         .ipv4 = {
 152                                 .dst_ip = filter->dst_ip,
 153                                 .dst_ip_msk = (__force __be32)-1,
 154                                 .src_ip = filter->src_ip,
 155                                 .src_ip_msk = (__force __be32)-1,
 156                         },
 157                 },
 158         };
 159         struct mlx4_spec_list spec_eth = {
 160                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 161         };
 162         struct mlx4_net_trans_rule rule = {
 163                 .list = LIST_HEAD_INIT(rule.list),
 164                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 165                 .exclusive = 1,
 166                 .allow_loopback = 1,
 167                 .promisc_mode = MLX4_FS_REGULAR,
 168                 .port = priv->port,
 169                 .priority = MLX4_DOMAIN_RFS,
 170         };
 171         int rc;
 172         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 173
 174         if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
 175                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 176                         filter->ip_proto);
 177                 goto ignore;
 178         }
 179         list_add_tail(&spec_eth.list, &rule.list);
 180         list_add_tail(&spec_ip.list, &rule.list);
 181         list_add_tail(&spec_tcp_udp.list, &rule.list);
 182
 183         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 184         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 185         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 186
 187         filter->activated = 0;
 188
 189         if (filter->reg_id) {
 190                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 191                 if (rc && rc != -ENOENT)
 192                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 193         }
 194
 195         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 196         if (rc)
 197                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 198
 199 ignore:
 200         mlx4_en_filter_rfs_expire(priv);
 201
 202         filter->activated = 1;
 203 }
 204
 205 static inline struct hlist_head *
 206 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 207                    __be16 src_port, __be16 dst_port)
 208 {
 209         unsigned long l;
 210         int bucket_idx;
 211
 212         l = (__force unsigned long)src_port |
 213             ((__force unsigned long)dst_port << 2);
 214         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 215
 216         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 217
 218         return &priv->filter_hash[bucket_idx];
 219 }
 220
 221 static struct mlx4_en_filter *
 222 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 223                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 224                      __be16 dst_port, u32 flow_id)
 225 {
 226         struct mlx4_en_filter *filter = NULL;
 227
 228         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 229         if (!filter)
 230                 return NULL;
 231
 232         filter->priv = priv;
 233         filter->rxq_index = rxq_index;
 234         INIT_WORK(&filter->work, mlx4_en_filter_work);
 235
 236         filter->src_ip = src_ip;
 237         filter->dst_ip = dst_ip;
 238         filter->ip_proto = ip_proto;
 239         filter->src_port = src_port;
 240         filter->dst_port = dst_port;
 241
 242         filter->flow_id = flow_id;
 243
 244         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 245
 246         list_add_tail(&filter->next, &priv->filters);
 247         hlist_add_head(&filter->filter_chain,
 248                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 249                                           dst_port));
 250
 251         return filter;
 252 }
 253
 254 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 255 {
 256         struct mlx4_en_priv *priv = filter->priv;
 257         int rc;
 258
 259         list_del(&filter->next);
 260
 261         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 262         if (rc && rc != -ENOENT)
 263                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 264
 265         kfree(filter);
 266 }
 267
 268 static inline struct mlx4_en_filter *
 269 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 270                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 271 {
 272         struct mlx4_en_filter *filter;
 273         struct mlx4_en_filter *ret = NULL;
 274
 275         hlist_for_each_entry(filter,
 276                              filter_hash_bucket(priv, src_ip, dst_ip,
 277                                                 src_port, dst_port),
 278                              filter_chain) {
 279                 if (filter->src_ip == src_ip &&
 280                     filter->dst_ip == dst_ip &&
 281                     filter->ip_proto == ip_proto &&
 282                     filter->src_port == src_port &&
 283                     filter->dst_port == dst_port) {
 284                         ret = filter;
 285                         break;
 286                 }
 287         }
 288
 289         return ret;
 290 }
 291
 292 static int
 293 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 294                    u16 rxq_index, u32 flow_id)
 295 {
 296         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 297         struct mlx4_en_filter *filter;
 298         const struct iphdr *ip;
 299         const __be16 *ports;
 300         u8 ip_proto;
 301         __be32 src_ip;
 302         __be32 dst_ip;
 303         __be16 src_port;
 304         __be16 dst_port;
 305         int nhoff = skb_network_offset(skb);
 306         int ret = 0;
 307
 308         if (skb->protocol != htons(ETH_P_IP))
 309                 return -EPROTONOSUPPORT;
 310
 311         ip = (const struct iphdr *)(skb->data + nhoff);
 312         if (ip_is_fragment(ip))
 313                 return -EPROTONOSUPPORT;
 314
 315         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 316                 return -EPROTONOSUPPORT;
 317         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 318
 319         ip_proto = ip->protocol;
 320         src_ip = ip->saddr;
 321         dst_ip = ip->daddr;
 322         src_port = ports[0];
 323         dst_port = ports[1];
 324
 325         spin_lock_bh(&priv->filters_lock);
 326         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 327                                      src_port, dst_port);
 328         if (filter) {
 329                 if (filter->rxq_index == rxq_index)
 330                         goto out;
 331
 332                 filter->rxq_index = rxq_index;
 333         } else {
 334                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 335                                               src_ip, dst_ip, ip_proto,
 336                                               src_port, dst_port, flow_id);
 337                 if (!filter) {
 338                         ret = -ENOMEM;
 339                         goto err;
 340                 }
 341         }
 342
 343         queue_work(priv->mdev->workqueue, &filter->work);
 344
 345 out:
 346         ret = filter->id;
 347 err:
 348         spin_unlock_bh(&priv->filters_lock);
 349
 350         return ret;
 351 }
 352
 353 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 354 {
 355         struct mlx4_en_filter *filter, *tmp;
 356         LIST_HEAD(del_list);
 357
 358         spin_lock_bh(&priv->filters_lock);
 359         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 360                 list_move(&filter->next, &del_list);
 361                 hlist_del(&filter->filter_chain);
 362         }
 363         spin_unlock_bh(&priv->filters_lock);
 364
 365         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 366                 cancel_work_sync(&filter->work);
 367                 mlx4_en_filter_free(filter);
 368         }
 369 }
 370
 371 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 372 {
 373         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 374         LIST_HEAD(del_list);
 375         int i = 0;
 376
 377         spin_lock_bh(&priv->filters_lock);
 378         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 379                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 380                         break;
 381
 382                 if (filter->activated &&
 383                     !work_pending(&filter->work) &&
 384                     rps_may_expire_flow(priv->dev,
 385                                         filter->rxq_index, filter->flow_id,
 386                                         filter->id)) {
 387                         list_move(&filter->next, &del_list);
 388                         hlist_del(&filter->filter_chain);
 389                 } else
 390                         last_filter = filter;
 391
 392                 i++;
 393         }
 394
 395         if (last_filter && (&last_filter->next != priv->filters.next))
 396                 list_move(&priv->filters, &last_filter->next);
 397
 398         spin_unlock_bh(&priv->filters_lock);
 399
 400         list_for_each_entry_safe(filter, tmp, &del_list, next)
 401                 mlx4_en_filter_free(filter);
 402 }
 403 #endif
 404
 405 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
 406                                    __be16 proto, u16 vid)
 407 {
 408         struct mlx4_en_priv *priv = netdev_priv(dev);
 409         struct mlx4_en_dev *mdev = priv->mdev;
 410         int err;
 411         int idx;
 412
 413         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 414
 415         set_bit(vid, priv->active_vlans);
 416
 417         /* Add VID to port VLAN filter */
 418         mutex_lock(&mdev->state_lock);
 419         if (mdev->device_up && priv->port_up) {
 420                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 421                 if (err) {
 422                         en_err(priv, "Failed configuring VLAN filter\n");
 423                         goto out;
 424                 }
 425         }
 426         err = mlx4_register_vlan(mdev->dev, priv->port, vid, &idx);
 427         if (err)
 428                 en_dbg(HW, priv, "Failed adding vlan %d\n", vid);
 429
 430 out:
 431         mutex_unlock(&mdev->state_lock);
 432         return err;
 433 }
 434
 435 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
 436                                     __be16 proto, u16 vid)
 437 {
 438         struct mlx4_en_priv *priv = netdev_priv(dev);
 439         struct mlx4_en_dev *mdev = priv->mdev;
 440         int err = 0;
 441
 442         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 443
 444         clear_bit(vid, priv->active_vlans);
 445
 446         /* Remove VID from port VLAN filter */
 447         mutex_lock(&mdev->state_lock);
 448         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 449
 450         if (mdev->device_up && priv->port_up) {
 451                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 452                 if (err)
 453                         en_err(priv, "Failed configuring VLAN filter\n");
 454         }
 455         mutex_unlock(&mdev->state_lock);
 456
 457         return err;
 458 }
 459
 460 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
 461 {
 462         int i;
 463         for (i = ETH_ALEN - 1; i >= 0; --i) {
 464                 dst_mac[i] = src_mac & 0xff;
 465                 src_mac >>= 8;
 466         }
 467         memset(&dst_mac[ETH_ALEN], 0, 2);
 468 }
 469
 470
 471 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
 472                                     int qpn, u64 *reg_id)
 473 {
 474         int err;
 475
 476         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
 477             priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
 478                 return 0; /* do nothing */
 479
 480         err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
 481                                     MLX4_DOMAIN_NIC, reg_id);
 482         if (err) {
 483                 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
 484                 return err;
 485         }
 486         en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
 487         return 0;
 488 }
 489
 490
 491 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 492                                 unsigned char *mac, int *qpn, u64 *reg_id)
 493 {
 494         struct mlx4_en_dev *mdev = priv->mdev;
 495         struct mlx4_dev *dev = mdev->dev;
 496         int err;
 497
 498         switch (dev->caps.steering_mode) {
 499         case MLX4_STEERING_MODE_B0: {
 500                 struct mlx4_qp qp;
 501                 u8 gid[16] = {0};
 502
 503                 qp.qpn = *qpn;
 504                 memcpy(&gid[10], mac, ETH_ALEN);
 505                 gid[5] = priv->port;
 506
 507                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 508                 break;
 509         }
 510         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 511                 struct mlx4_spec_list spec_eth = { {NULL} };
 512                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 513
 514                 struct mlx4_net_trans_rule rule = {
 515                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 516                         .exclusive = 0,
 517                         .allow_loopback = 1,
 518                         .promisc_mode = MLX4_FS_REGULAR,
 519                         .priority = MLX4_DOMAIN_NIC,
 520                 };
 521
 522                 rule.port = priv->port;
 523                 rule.qpn = *qpn;
 524                 INIT_LIST_HEAD(&rule.list);
 525
 526                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 527                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 528                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 529                 list_add_tail(&spec_eth.list, &rule.list);
 530
 531                 err = mlx4_flow_attach(dev, &rule, reg_id);
 532                 break;
 533         }
 534         default:
 535                 return -EINVAL;
 536         }
 537         if (err)
 538                 en_warn(priv, "Failed Attaching Unicast\n");
 539
 540         return err;
 541 }
 542
 543 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 544                                      unsigned char *mac, int qpn, u64 reg_id)
 545 {
 546         struct mlx4_en_dev *mdev = priv->mdev;
 547         struct mlx4_dev *dev = mdev->dev;
 548
 549         switch (dev->caps.steering_mode) {
 550         case MLX4_STEERING_MODE_B0: {
 551                 struct mlx4_qp qp;
 552                 u8 gid[16] = {0};
 553
 554                 qp.qpn = qpn;
 555                 memcpy(&gid[10], mac, ETH_ALEN);
 556                 gid[5] = priv->port;
 557
 558                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 559                 break;
 560         }
 561         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 562                 mlx4_flow_detach(dev, reg_id);
 563                 break;
 564         }
 565         default:
 566                 en_err(priv, "Invalid steering mode.\n");
 567         }
 568 }
 569
 570 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 571 {
 572         struct mlx4_en_dev *mdev = priv->mdev;
 573         struct mlx4_dev *dev = mdev->dev;
 574         int index = 0;
 575         int err = 0;
 576         int *qpn = &priv->base_qpn;
 577         u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 578
 579         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 580                priv->dev->dev_addr);
 581         index = mlx4_register_mac(dev, priv->port, mac);
 582         if (index < 0) {
 583                 err = index;
 584                 en_err(priv, "Failed adding MAC: %pM\n",
 585                        priv->dev->dev_addr);
 586                 return err;
 587         }
 588
 589         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 590                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 591                 *qpn = base_qpn + index;
 592                 return 0;
 593         }
 594
 595         err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP);
 596         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 597         if (err) {
 598                 en_err(priv, "Failed to reserve qp for mac registration\n");
 599                 mlx4_unregister_mac(dev, priv->port, mac);
 600                 return err;
 601         }
 602
 603         return 0;
 604 }
 605
 606 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 607 {
 608         struct mlx4_en_dev *mdev = priv->mdev;
 609         struct mlx4_dev *dev = mdev->dev;
 610         int qpn = priv->base_qpn;
 611
 612         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 613                 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 614                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 615                        priv->dev->dev_addr);
 616                 mlx4_unregister_mac(dev, priv->port, mac);
 617         } else {
 618                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 619                        priv->port, qpn);
 620                 mlx4_qp_release_range(dev, qpn, 1);
 621                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 622         }
 623 }
 624
 625 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
 626                                unsigned char *new_mac, unsigned char *prev_mac)
 627 {
 628         struct mlx4_en_dev *mdev = priv->mdev;
 629         struct mlx4_dev *dev = mdev->dev;
 630         int err = 0;
 631         u64 new_mac_u64 = mlx4_mac_to_u64(new_mac);
 632
 633         if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
 634                 struct hlist_head *bucket;
 635                 unsigned int mac_hash;
 636                 struct mlx4_mac_entry *entry;
 637                 struct hlist_node *tmp;
 638                 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac);
 639
 640                 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
 641                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 642                         if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
 643                                 mlx4_en_uc_steer_release(priv, entry->mac,
 644                                                          qpn, entry->reg_id);
 645                                 mlx4_unregister_mac(dev, priv->port,
 646                                                     prev_mac_u64);
 647                                 hlist_del_rcu(&entry->hlist);
 648                                 synchronize_rcu();
 649                                 memcpy(entry->mac, new_mac, ETH_ALEN);
 650                                 entry->reg_id = 0;
 651                                 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
 652                                 hlist_add_head_rcu(&entry->hlist,
 653                                                    &priv->mac_hash[mac_hash]);
 654                                 mlx4_register_mac(dev, priv->port, new_mac_u64);
 655                                 err = mlx4_en_uc_steer_add(priv, new_mac,
 656                                                            &qpn,
 657                                                            &entry->reg_id);
 658                                 if (err)
 659                                         return err;
 660                                 if (priv->tunnel_reg_id) {
 661                                         mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 662                                         priv->tunnel_reg_id = 0;
 663                                 }
 664                                 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
 665                                                                &priv->tunnel_reg_id);
 666                                 return err;
 667                         }
 668                 }
 669                 return -EINVAL;
 670         }
 671
 672         return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
 673 }
 674
 675 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
 676                               unsigned char new_mac[ETH_ALEN + 2])
 677 {
 678         int err = 0;
 679
 680         if (priv->port_up) {
 681                 /* Remove old MAC and insert the new one */
 682                 err = mlx4_en_replace_mac(priv, priv->base_qpn,
 683                                           new_mac, priv->current_mac);
 684                 if (err)
 685                         en_err(priv, "Failed changing HW MAC address\n");
 686         } else
 687                 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
 688
 689         if (!err)
 690                 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
 691
 692         return err;
 693 }
 694
 695 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
 696 {
 697         struct mlx4_en_priv *priv = netdev_priv(dev);
 698         struct mlx4_en_dev *mdev = priv->mdev;
 699         struct sockaddr *saddr = addr;
 700         unsigned char new_mac[ETH_ALEN + 2];
 701         int err;
 702
 703         if (!is_valid_ether_addr(saddr->sa_data))
 704                 return -EADDRNOTAVAIL;
 705
 706         mutex_lock(&mdev->state_lock);
 707         memcpy(new_mac, saddr->sa_data, ETH_ALEN);
 708         err = mlx4_en_do_set_mac(priv, new_mac);
 709         if (!err)
 710                 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
 711         mutex_unlock(&mdev->state_lock);
 712
 713         return err;
 714 }
 715
 716 static void mlx4_en_clear_list(struct net_device *dev)
 717 {
 718         struct mlx4_en_priv *priv = netdev_priv(dev);
 719         struct mlx4_en_mc_list *tmp, *mc_to_del;
 720
 721         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 722                 list_del(&mc_to_del->list);
 723                 kfree(mc_to_del);
 724         }
 725 }
 726
 727 static void mlx4_en_cache_mclist(struct net_device *dev)
 728 {
 729         struct mlx4_en_priv *priv = netdev_priv(dev);
 730         struct netdev_hw_addr *ha;
 731         struct mlx4_en_mc_list *tmp;
 732
 733         mlx4_en_clear_list(dev);
 734         netdev_for_each_mc_addr(ha, dev) {
 735                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 736                 if (!tmp) {
 737                         mlx4_en_clear_list(dev);
 738                         return;
 739                 }
 740                 memcpy(tmp->addr, ha->addr, ETH_ALEN);
 741                 list_add_tail(&tmp->list, &priv->mc_list);
 742         }
 743 }
 744
 745 static void update_mclist_flags(struct mlx4_en_priv *priv,
 746                                 struct list_head *dst,
 747                                 struct list_head *src)
 748 {
 749         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 750         bool found;
 751
 752         /* Find all the entries that should be removed from dst,
 753          * These are the entries that are not found in src
 754          */
 755         list_for_each_entry(dst_tmp, dst, list) {
 756                 found = false;
 757                 list_for_each_entry(src_tmp, src, list) {
 758                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 759                                 found = true;
 760                                 break;
 761                         }
 762                 }
 763                 if (!found)
 764                         dst_tmp->action = MCLIST_REM;
 765         }
 766
 767         /* Add entries that exist in src but not in dst
 768          * mark them as need to add
 769          */
 770         list_for_each_entry(src_tmp, src, list) {
 771                 found = false;
 772                 list_for_each_entry(dst_tmp, dst, list) {
 773                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 774                                 dst_tmp->action = MCLIST_NONE;
 775                                 found = true;
 776                                 break;
 777                         }
 778                 }
 779                 if (!found) {
 780                         new_mc = kmemdup(src_tmp,
 781                                          sizeof(struct mlx4_en_mc_list),
 782                                          GFP_KERNEL);
 783                         if (!new_mc)
 784                                 return;
 785
 786                         new_mc->action = MCLIST_ADD;
 787                         list_add_tail(&new_mc->list, dst);
 788                 }
 789         }
 790 }
 791
 792 static void mlx4_en_set_rx_mode(struct net_device *dev)
 793 {
 794         struct mlx4_en_priv *priv = netdev_priv(dev);
 795
 796         if (!priv->port_up)
 797                 return;
 798
 799         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 800 }
 801
 802 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 803                                      struct mlx4_en_dev *mdev)
 804 {
 805         int err = 0;
 806
 807         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 808                 if (netif_msg_rx_status(priv))
 809                         en_warn(priv, "Entering promiscuous mode\n");
 810                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 811
 812                 /* Enable promiscouos mode */
 813                 switch (mdev->dev->caps.steering_mode) {
 814                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 815                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 816                                                           priv->port,
 817                                                           priv->base_qpn,
 818                                                           MLX4_FS_ALL_DEFAULT);
 819                         if (err)
 820                                 en_err(priv, "Failed enabling promiscuous mode\n");
 821                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 822                         break;
 823
 824                 case MLX4_STEERING_MODE_B0:
 825                         err = mlx4_unicast_promisc_add(mdev->dev,
 826                                                        priv->base_qpn,
 827                                                        priv->port);
 828                         if (err)
 829                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 830
 831                         /* Add the default qp number as multicast
 832                          * promisc
 833                          */
 834                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 835                                 err = mlx4_multicast_promisc_add(mdev->dev,
 836                                                                  priv->base_qpn,
 837                                                                  priv->port);
 838                                 if (err)
 839                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 840                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 841                         }
 842                         break;
 843
 844                 case MLX4_STEERING_MODE_A0:
 845                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 846                                                      priv->port,
 847                                                      priv->base_qpn,
 848                                                      1);
 849                         if (err)
 850                                 en_err(priv, "Failed enabling promiscuous mode\n");
 851                         break;
 852                 }
 853
 854                 /* Disable port multicast filter (unconditionally) */
 855                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 856                                           0, MLX4_MCAST_DISABLE);
 857                 if (err)
 858                         en_err(priv, "Failed disabling multicast filter\n");
 859         }
 860 }
 861
 862 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 863                                        struct mlx4_en_dev *mdev)
 864 {
 865         int err = 0;
 866
 867         if (netif_msg_rx_status(priv))
 868                 en_warn(priv, "Leaving promiscuous mode\n");
 869         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 870
 871         /* Disable promiscouos mode */
 872         switch (mdev->dev->caps.steering_mode) {
 873         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 874                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 875                                                      priv->port,
 876                                                      MLX4_FS_ALL_DEFAULT);
 877                 if (err)
 878                         en_err(priv, "Failed disabling promiscuous mode\n");
 879                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 880                 break;
 881
 882         case MLX4_STEERING_MODE_B0:
 883                 err = mlx4_unicast_promisc_remove(mdev->dev,
 884                                                   priv->base_qpn,
 885                                                   priv->port);
 886                 if (err)
 887                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 888                 /* Disable Multicast promisc */
 889                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 890                         err = mlx4_multicast_promisc_remove(mdev->dev,
 891                                                             priv->base_qpn,
 892                                                             priv->port);
 893                         if (err)
 894                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 895                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 896                 }
 897                 break;
 898
 899         case MLX4_STEERING_MODE_A0:
 900                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 901                                              priv->port,
 902                                              priv->base_qpn, 0);
 903                 if (err)
 904                         en_err(priv, "Failed disabling promiscuous mode\n");
 905                 break;
 906         }
 907 }
 908
 909 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 910                                  struct net_device *dev,
 911                                  struct mlx4_en_dev *mdev)
 912 {
 913         struct mlx4_en_mc_list *mclist, *tmp;
 914         u64 mcast_addr = 0;
 915         u8 mc_list[16] = {0};
 916         int err = 0;
 917
 918         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
 919         if (dev->flags & IFF_ALLMULTI) {
 920                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 921                                           0, MLX4_MCAST_DISABLE);
 922                 if (err)
 923                         en_err(priv, "Failed disabling multicast filter\n");
 924
 925                 /* Add the default qp number as multicast promisc */
 926                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 927                         switch (mdev->dev->caps.steering_mode) {
 928                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 929                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
 930                                                                   priv->port,
 931                                                                   priv->base_qpn,
 932                                                                   MLX4_FS_MC_DEFAULT);
 933                                 break;
 934
 935                         case MLX4_STEERING_MODE_B0:
 936                                 err = mlx4_multicast_promisc_add(mdev->dev,
 937                                                                  priv->base_qpn,
 938                                                                  priv->port);
 939                                 break;
 940
 941                         case MLX4_STEERING_MODE_A0:
 942                                 break;
 943                         }
 944                         if (err)
 945                                 en_err(priv, "Failed entering multicast promisc mode\n");
 946                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 947                 }
 948         } else {
 949                 /* Disable Multicast promisc */
 950                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 951                         switch (mdev->dev->caps.steering_mode) {
 952                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 953                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 954                                                                      priv->port,
 955                                                                      MLX4_FS_MC_DEFAULT);
 956                                 break;
 957
 958                         case MLX4_STEERING_MODE_B0:
 959                                 err = mlx4_multicast_promisc_remove(mdev->dev,
 960                                                                     priv->base_qpn,
 961                                                                     priv->port);
 962                                 break;
 963
 964                         case MLX4_STEERING_MODE_A0:
 965                                 break;
 966                         }
 967                         if (err)
 968                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 969                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 970                 }
 971
 972                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 973                                           0, MLX4_MCAST_DISABLE);
 974                 if (err)
 975                         en_err(priv, "Failed disabling multicast filter\n");
 976
 977                 /* Flush mcast filter and init it with broadcast address */
 978                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
 979                                     1, MLX4_MCAST_CONFIG);
 980
 981                 /* Update multicast list - we cache all addresses so they won't
 982                  * change while HW is updated holding the command semaphor */
 983                 netif_addr_lock_bh(dev);
 984                 mlx4_en_cache_mclist(dev);
 985                 netif_addr_unlock_bh(dev);
 986                 list_for_each_entry(mclist, &priv->mc_list, list) {
 987                         mcast_addr = mlx4_mac_to_u64(mclist->addr);
 988                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
 989                                             mcast_addr, 0, MLX4_MCAST_CONFIG);
 990                 }
 991                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 992                                           0, MLX4_MCAST_ENABLE);
 993                 if (err)
 994                         en_err(priv, "Failed enabling multicast filter\n");
 995
 996                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
 997                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
 998                         if (mclist->action == MCLIST_REM) {
 999                                 /* detach this address and delete from list */
1000                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1001                                 mc_list[5] = priv->port;
1002                                 err = mlx4_multicast_detach(mdev->dev,
1003                                                             &priv->rss_map.indir_qp,
1004                                                             mc_list,
1005                                                             MLX4_PROT_ETH,
1006                                                             mclist->reg_id);
1007                                 if (err)
1008                                         en_err(priv, "Fail to detach multicast address\n");
1009
1010                                 if (mclist->tunnel_reg_id) {
1011                                         err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1012                                         if (err)
1013                                                 en_err(priv, "Failed to detach multicast address\n");
1014                                 }
1015
1016                                 /* remove from list */
1017                                 list_del(&mclist->list);
1018                                 kfree(mclist);
1019                         } else if (mclist->action == MCLIST_ADD) {
1020                                 /* attach the address */
1021                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1022                                 /* needed for B0 steering support */
1023                                 mc_list[5] = priv->port;
1024                                 err = mlx4_multicast_attach(mdev->dev,
1025                                                             &priv->rss_map.indir_qp,
1026                                                             mc_list,
1027                                                             priv->port, 0,
1028                                                             MLX4_PROT_ETH,
1029                                                             &mclist->reg_id);
1030                                 if (err)
1031                                         en_err(priv, "Fail to attach multicast address\n");
1032
1033                                 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1034                                                                &mclist->tunnel_reg_id);
1035                                 if (err)
1036                                         en_err(priv, "Failed to attach multicast address\n");
1037                         }
1038                 }
1039         }
1040 }
1041
1042 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1043                                  struct net_device *dev,
1044                                  struct mlx4_en_dev *mdev)
1045 {
1046         struct netdev_hw_addr *ha;
1047         struct mlx4_mac_entry *entry;
1048         struct hlist_node *tmp;
1049         bool found;
1050         u64 mac;
1051         int err = 0;
1052         struct hlist_head *bucket;
1053         unsigned int i;
1054         int removed = 0;
1055         u32 prev_flags;
1056
1057         /* Note that we do not need to protect our mac_hash traversal with rcu,
1058          * since all modification code is protected by mdev->state_lock
1059          */
1060
1061         /* find what to remove */
1062         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1063                 bucket = &priv->mac_hash[i];
1064                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1065                         found = false;
1066                         netdev_for_each_uc_addr(ha, dev) {
1067                                 if (ether_addr_equal_64bits(entry->mac,
1068                                                             ha->addr)) {
1069                                         found = true;
1070                                         break;
1071                                 }
1072                         }
1073
1074                         /* MAC address of the port is not in uc list */
1075                         if (ether_addr_equal_64bits(entry->mac,
1076                                                     priv->current_mac))
1077                                 found = true;
1078
1079                         if (!found) {
1080                                 mac = mlx4_mac_to_u64(entry->mac);
1081                                 mlx4_en_uc_steer_release(priv, entry->mac,
1082                                                          priv->base_qpn,
1083                                                          entry->reg_id);
1084                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1085
1086                                 hlist_del_rcu(&entry->hlist);
1087                                 kfree_rcu(entry, rcu);
1088                                 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1089                                        entry->mac, priv->port);
1090                                 ++removed;
1091                         }
1092                 }
1093         }
1094
1095         /* if we didn't remove anything, there is no use in trying to add
1096          * again once we are in a forced promisc mode state
1097          */
1098         if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1099                 return;
1100
1101         prev_flags = priv->flags;
1102         priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1103
1104         /* find what to add */
1105         netdev_for_each_uc_addr(ha, dev) {
1106                 found = false;
1107                 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1108                 hlist_for_each_entry(entry, bucket, hlist) {
1109                         if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1110                                 found = true;
1111                                 break;
1112                         }
1113                 }
1114
1115                 if (!found) {
1116                         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1117                         if (!entry) {
1118                                 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1119                                        ha->addr, priv->port);
1120                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1121                                 break;
1122                         }
1123                         mac = mlx4_mac_to_u64(ha->addr);
1124                         memcpy(entry->mac, ha->addr, ETH_ALEN);
1125                         err = mlx4_register_mac(mdev->dev, priv->port, mac);
1126                         if (err < 0) {
1127                                 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1128                                        ha->addr, priv->port, err);
1129                                 kfree(entry);
1130                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1131                                 break;
1132                         }
1133                         err = mlx4_en_uc_steer_add(priv, ha->addr,
1134                                                    &priv->base_qpn,
1135                                                    &entry->reg_id);
1136                         if (err) {
1137                                 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1138                                        ha->addr, priv->port, err);
1139                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1140                                 kfree(entry);
1141                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1142                                 break;
1143                         } else {
1144                                 unsigned int mac_hash;
1145                                 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1146                                        ha->addr, priv->port);
1147                                 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1148                                 bucket = &priv->mac_hash[mac_hash];
1149                                 hlist_add_head_rcu(&entry->hlist, bucket);
1150                         }
1151                 }
1152         }
1153
1154         if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1155                 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1156                         priv->port);
1157         } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1158                 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1159                         priv->port);
1160         }
1161 }
1162
1163 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1164 {
1165         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1166                                                  rx_mode_task);
1167         struct mlx4_en_dev *mdev = priv->mdev;
1168         struct net_device *dev = priv->dev;
1169
1170         mutex_lock(&mdev->state_lock);
1171         if (!mdev->device_up) {
1172                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1173                 goto out;
1174         }
1175         if (!priv->port_up) {
1176                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1177                 goto out;
1178         }
1179
1180         if (!netif_carrier_ok(dev)) {
1181                 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1182                         if (priv->port_state.link_state) {
1183                                 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1184                                 netif_carrier_on(dev);
1185                                 en_dbg(LINK, priv, "Link Up\n");
1186                         }
1187                 }
1188         }
1189
1190         if (dev->priv_flags & IFF_UNICAST_FLT)
1191                 mlx4_en_do_uc_filter(priv, dev, mdev);
1192
1193         /* Promsicuous mode: disable all filters */
1194         if ((dev->flags & IFF_PROMISC) ||
1195             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1196                 mlx4_en_set_promisc_mode(priv, mdev);
1197                 goto out;
1198         }
1199
1200         /* Not in promiscuous mode */
1201         if (priv->flags & MLX4_EN_FLAG_PROMISC)
1202                 mlx4_en_clear_promisc_mode(priv, mdev);
1203
1204         mlx4_en_do_multicast(priv, dev, mdev);
1205 out:
1206         mutex_unlock(&mdev->state_lock);
1207 }
1208
1209 #ifdef CONFIG_NET_POLL_CONTROLLER
1210 static void mlx4_en_netpoll(struct net_device *dev)
1211 {
1212         struct mlx4_en_priv *priv = netdev_priv(dev);
1213         struct mlx4_en_cq *cq;
1214         int i;
1215
1216         for (i = 0; i < priv->tx_ring_num; i++) {
1217                 cq = priv->tx_cq[i];
1218                 napi_schedule(&cq->napi);
1219         }
1220 }
1221 #endif
1222
1223 static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv)
1224 {
1225         u64 reg_id;
1226         int err = 0;
1227         int *qpn = &priv->base_qpn;
1228         struct mlx4_mac_entry *entry;
1229
1230         err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
1231         if (err)
1232                 return err;
1233
1234         err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
1235                                        &priv->tunnel_reg_id);
1236         if (err)
1237                 goto tunnel_err;
1238
1239         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1240         if (!entry) {
1241                 err = -ENOMEM;
1242                 goto alloc_err;
1243         }
1244
1245         memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
1246         memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
1247         entry->reg_id = reg_id;
1248         hlist_add_head_rcu(&entry->hlist,
1249                            &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
1250
1251         return 0;
1252
1253 alloc_err:
1254         if (priv->tunnel_reg_id)
1255                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1256
1257 tunnel_err:
1258         mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
1259         return err;
1260 }
1261
1262 static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv)
1263 {
1264         u64 mac;
1265         unsigned int i;
1266         int qpn = priv->base_qpn;
1267         struct hlist_head *bucket;
1268         struct hlist_node *tmp;
1269         struct mlx4_mac_entry *entry;
1270
1271         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1272                 bucket = &priv->mac_hash[i];
1273                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1274                         mac = mlx4_mac_to_u64(entry->mac);
1275                         en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n",
1276                                entry->mac);
1277                         mlx4_en_uc_steer_release(priv, entry->mac,
1278                                                  qpn, entry->reg_id);
1279
1280                         mlx4_unregister_mac(priv->mdev->dev, priv->port, mac);
1281                         hlist_del_rcu(&entry->hlist);
1282                         kfree_rcu(entry, rcu);
1283                 }
1284         }
1285
1286         if (priv->tunnel_reg_id) {
1287                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1288                 priv->tunnel_reg_id = 0;
1289         }
1290 }
1291
1292 static void mlx4_en_tx_timeout(struct net_device *dev)
1293 {
1294         struct mlx4_en_priv *priv = netdev_priv(dev);
1295         struct mlx4_en_dev *mdev = priv->mdev;
1296         int i;
1297
1298         if (netif_msg_timer(priv))
1299                 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1300
1301         for (i = 0; i < priv->tx_ring_num; i++) {
1302                 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1303                         continue;
1304                 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1305                         i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn,
1306                         priv->tx_ring[i]->cons, priv->tx_ring[i]->prod);
1307         }
1308
1309         priv->port_stats.tx_timeout++;
1310         en_dbg(DRV, priv, "Scheduling watchdog\n");
1311         queue_work(mdev->workqueue, &priv->watchdog_task);
1312 }
1313
1314
1315 static struct rtnl_link_stats64 *
1316 mlx4_en_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1317 {
1318         struct mlx4_en_priv *priv = netdev_priv(dev);
1319
1320         spin_lock_bh(&priv->stats_lock);
1321         netdev_stats_to_stats64(stats, &dev->stats);
1322         spin_unlock_bh(&priv->stats_lock);
1323
1324         return stats;
1325 }
1326
1327 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1328 {
1329         struct mlx4_en_cq *cq;
1330         int i;
1331
1332         /* If we haven't received a specific coalescing setting
1333          * (module param), we set the moderation parameters as follows:
1334          * - moder_cnt is set to the number of mtu sized packets to
1335          *   satisfy our coalescing target.
1336          * - moder_time is set to a fixed value.
1337          */
1338         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1339         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1340         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1341         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1342         en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1343                priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1344
1345         /* Setup cq moderation params */
1346         for (i = 0; i < priv->rx_ring_num; i++) {
1347                 cq = priv->rx_cq[i];
1348                 cq->moder_cnt = priv->rx_frames;
1349                 cq->moder_time = priv->rx_usecs;
1350                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1351                 priv->last_moder_packets[i] = 0;
1352                 priv->last_moder_bytes[i] = 0;
1353         }
1354
1355         for (i = 0; i < priv->tx_ring_num; i++) {
1356                 cq = priv->tx_cq[i];
1357                 cq->moder_cnt = priv->tx_frames;
1358                 cq->moder_time = priv->tx_usecs;
1359         }
1360
1361         /* Reset auto-moderation params */
1362         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1363         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1364         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1365         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1366         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1367         priv->adaptive_rx_coal = 1;
1368         priv->last_moder_jiffies = 0;
1369         priv->last_moder_tx_packets = 0;
1370 }
1371
1372 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1373 {
1374         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1375         struct mlx4_en_cq *cq;
1376         unsigned long packets;
1377         unsigned long rate;
1378         unsigned long avg_pkt_size;
1379         unsigned long rx_packets;
1380         unsigned long rx_bytes;
1381         unsigned long rx_pkt_diff;
1382         int moder_time;
1383         int ring, err;
1384
1385         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1386                 return;
1387
1388         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1389                 spin_lock_bh(&priv->stats_lock);
1390                 rx_packets = priv->rx_ring[ring]->packets;
1391                 rx_bytes = priv->rx_ring[ring]->bytes;
1392                 spin_unlock_bh(&priv->stats_lock);
1393
1394                 rx_pkt_diff = ((unsigned long) (rx_packets -
1395                                 priv->last_moder_packets[ring]));
1396                 packets = rx_pkt_diff;
1397                 rate = packets * HZ / period;
1398                 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1399                                 priv->last_moder_bytes[ring])) / packets : 0;
1400
1401                 /* Apply auto-moderation only when packet rate
1402                  * exceeds a rate that it matters */
1403                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1404                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1405                         if (rate < priv->pkt_rate_low)
1406                                 moder_time = priv->rx_usecs_low;
1407                         else if (rate > priv->pkt_rate_high)
1408                                 moder_time = priv->rx_usecs_high;
1409                         else
1410                                 moder_time = (rate - priv->pkt_rate_low) *
1411                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1412                                         (priv->pkt_rate_high - priv->pkt_rate_low) +
1413                                         priv->rx_usecs_low;
1414                 } else {
1415                         moder_time = priv->rx_usecs_low;
1416                 }
1417
1418                 if (moder_time != priv->last_moder_time[ring]) {
1419                         priv->last_moder_time[ring] = moder_time;
1420                         cq = priv->rx_cq[ring];
1421                         cq->moder_time = moder_time;
1422                         cq->moder_cnt = priv->rx_frames;
1423                         err = mlx4_en_set_cq_moder(priv, cq);
1424                         if (err)
1425                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1426                                        ring);
1427                 }
1428                 priv->last_moder_packets[ring] = rx_packets;
1429                 priv->last_moder_bytes[ring] = rx_bytes;
1430         }
1431
1432         priv->last_moder_jiffies = jiffies;
1433 }
1434
1435 static void mlx4_en_do_get_stats(struct work_struct *work)
1436 {
1437         struct delayed_work *delay = to_delayed_work(work);
1438         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1439                                                  stats_task);
1440         struct mlx4_en_dev *mdev = priv->mdev;
1441         int err;
1442
1443         mutex_lock(&mdev->state_lock);
1444         if (mdev->device_up) {
1445                 if (priv->port_up) {
1446                         err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1447                         if (err)
1448                                 en_dbg(HW, priv, "Could not update stats\n");
1449
1450                         mlx4_en_auto_moderation(priv);
1451                 }
1452
1453                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1454         }
1455         if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1456                 mlx4_en_do_set_mac(priv, priv->current_mac);
1457                 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1458         }
1459         mutex_unlock(&mdev->state_lock);
1460 }
1461
1462 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1463  * periodically
1464  */
1465 static void mlx4_en_service_task(struct work_struct *work)
1466 {
1467         struct delayed_work *delay = to_delayed_work(work);
1468         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1469                                                  service_task);
1470         struct mlx4_en_dev *mdev = priv->mdev;
1471
1472         mutex_lock(&mdev->state_lock);
1473         if (mdev->device_up) {
1474                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1475                         mlx4_en_ptp_overflow_check(mdev);
1476
1477                 mlx4_en_recover_from_oom(priv);
1478                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1479                                    SERVICE_TASK_DELAY);
1480         }
1481         mutex_unlock(&mdev->state_lock);
1482 }
1483
1484 static void mlx4_en_linkstate(struct work_struct *work)
1485 {
1486         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1487                                                  linkstate_task);
1488         struct mlx4_en_dev *mdev = priv->mdev;
1489         int linkstate = priv->link_state;
1490
1491         mutex_lock(&mdev->state_lock);
1492         /* If observable port state changed set carrier state and
1493          * report to system log */
1494         if (priv->last_link_state != linkstate) {
1495                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1496                         en_info(priv, "Link Down\n");
1497                         netif_carrier_off(priv->dev);
1498                 } else {
1499                         en_info(priv, "Link Up\n");
1500                         netif_carrier_on(priv->dev);
1501                 }
1502         }
1503         priv->last_link_state = linkstate;
1504         mutex_unlock(&mdev->state_lock);
1505 }
1506
1507 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1508 {
1509         struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1510         int numa_node = priv->mdev->dev->numa_node;
1511
1512         if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL))
1513                 return -ENOMEM;
1514
1515         cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node),
1516                         ring->affinity_mask);
1517         return 0;
1518 }
1519
1520 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1521 {
1522         free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
1523 }
1524
1525 static void mlx4_en_init_recycle_ring(struct mlx4_en_priv *priv,
1526                                       int tx_ring_idx)
1527 {
1528         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[tx_ring_idx];
1529         int rr_index;
1530
1531         rr_index = (priv->xdp_ring_num - priv->tx_ring_num) + tx_ring_idx;
1532         if (rr_index >= 0) {
1533                 tx_ring->free_tx_desc = mlx4_en_recycle_tx_desc;
1534                 tx_ring->recycle_ring = priv->rx_ring[rr_index];
1535                 en_dbg(DRV, priv,
1536                        "Set tx_ring[%d]->recycle_ring = rx_ring[%d]\n",
1537                        tx_ring_idx, rr_index);
1538         } else {
1539                 tx_ring->recycle_ring = NULL;
1540         }
1541 }
1542
1543 int mlx4_en_start_port(struct net_device *dev)
1544 {
1545         struct mlx4_en_priv *priv = netdev_priv(dev);
1546         struct mlx4_en_dev *mdev = priv->mdev;
1547         struct mlx4_en_cq *cq;
1548         struct mlx4_en_tx_ring *tx_ring;
1549         int rx_index = 0;
1550         int tx_index = 0;
1551         int err = 0;
1552         int i;
1553         int j;
1554         u8 mc_list[16] = {0};
1555
1556         if (priv->port_up) {
1557                 en_dbg(DRV, priv, "start port called while port already up\n");
1558                 return 0;
1559         }
1560
1561         INIT_LIST_HEAD(&priv->mc_list);
1562         INIT_LIST_HEAD(&priv->curr_list);
1563         INIT_LIST_HEAD(&priv->ethtool_list);
1564         memset(&priv->ethtool_rules[0], 0,
1565                sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1566
1567         /* Calculate Rx buf size */
1568         dev->mtu = min(dev->mtu, priv->max_mtu);
1569         mlx4_en_calc_rx_buf(dev);
1570         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1571
1572         /* Configure rx cq's and rings */
1573         err = mlx4_en_activate_rx_rings(priv);
1574         if (err) {
1575                 en_err(priv, "Failed to activate RX rings\n");
1576                 return err;
1577         }
1578         for (i = 0; i < priv->rx_ring_num; i++) {
1579                 cq = priv->rx_cq[i];
1580
1581                 err = mlx4_en_init_affinity_hint(priv, i);
1582                 if (err) {
1583                         en_err(priv, "Failed preparing IRQ affinity hint\n");
1584                         goto cq_err;
1585                 }
1586
1587                 err = mlx4_en_activate_cq(priv, cq, i);
1588                 if (err) {
1589                         en_err(priv, "Failed activating Rx CQ\n");
1590                         mlx4_en_free_affinity_hint(priv, i);
1591                         goto cq_err;
1592                 }
1593
1594                 for (j = 0; j < cq->size; j++) {
1595                         struct mlx4_cqe *cqe = NULL;
1596
1597                         cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) +
1598                               priv->cqe_factor;
1599                         cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1600                 }
1601
1602                 err = mlx4_en_set_cq_moder(priv, cq);
1603                 if (err) {
1604                         en_err(priv, "Failed setting cq moderation parameters\n");
1605                         mlx4_en_deactivate_cq(priv, cq);
1606                         mlx4_en_free_affinity_hint(priv, i);
1607                         goto cq_err;
1608                 }
1609                 mlx4_en_arm_cq(priv, cq);
1610                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1611                 ++rx_index;
1612         }
1613
1614         /* Set qp number */
1615         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1616         err = mlx4_en_get_qp(priv);
1617         if (err) {
1618                 en_err(priv, "Failed getting eth qp\n");
1619                 goto cq_err;
1620         }
1621         mdev->mac_removed[priv->port] = 0;
1622
1623         priv->counter_index =
1624                         mlx4_get_default_counter_index(mdev->dev, priv->port);
1625
1626         err = mlx4_en_config_rss_steer(priv);
1627         if (err) {
1628                 en_err(priv, "Failed configuring rss steering\n");
1629                 goto mac_err;
1630         }
1631
1632         err = mlx4_en_create_drop_qp(priv);
1633         if (err)
1634                 goto rss_err;
1635
1636         /* Configure tx cq's and rings */
1637         for (i = 0; i < priv->tx_ring_num; i++) {
1638                 /* Configure cq */
1639                 cq = priv->tx_cq[i];
1640                 err = mlx4_en_activate_cq(priv, cq, i);
1641                 if (err) {
1642                         en_err(priv, "Failed allocating Tx CQ\n");
1643                         goto tx_err;
1644                 }
1645                 err = mlx4_en_set_cq_moder(priv, cq);
1646                 if (err) {
1647                         en_err(priv, "Failed setting cq moderation parameters\n");
1648                         mlx4_en_deactivate_cq(priv, cq);
1649                         goto tx_err;
1650                 }
1651                 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1652                 cq->buf->wqe_index = cpu_to_be16(0xffff);
1653
1654                 /* Configure ring */
1655                 tx_ring = priv->tx_ring[i];
1656                 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1657                         i / priv->num_tx_rings_p_up);
1658                 if (err) {
1659                         en_err(priv, "Failed allocating Tx ring\n");
1660                         mlx4_en_deactivate_cq(priv, cq);
1661                         goto tx_err;
1662                 }
1663                 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1664
1665                 mlx4_en_init_recycle_ring(priv, i);
1666
1667                 /* Arm CQ for TX completions */
1668                 mlx4_en_arm_cq(priv, cq);
1669
1670                 /* Set initial ownership of all Tx TXBBs to SW (1) */
1671                 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1672                         *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1673                 ++tx_index;
1674         }
1675
1676         /* Configure port */
1677         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1678                                     priv->rx_skb_size + ETH_FCS_LEN,
1679                                     priv->prof->tx_pause,
1680                                     priv->prof->tx_ppp,
1681                                     priv->prof->rx_pause,
1682                                     priv->prof->rx_ppp);
1683         if (err) {
1684                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1685                        priv->port, err);
1686                 goto tx_err;
1687         }
1688         /* Set default qp number */
1689         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1690         if (err) {
1691                 en_err(priv, "Failed setting default qp numbers\n");
1692                 goto tx_err;
1693         }
1694
1695         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1696                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1697                 if (err) {
1698                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1699                                err);
1700                         goto tx_err;
1701                 }
1702         }
1703
1704         /* Init port */
1705         en_dbg(HW, priv, "Initializing port\n");
1706         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1707         if (err) {
1708                 en_err(priv, "Failed Initializing port\n");
1709                 goto tx_err;
1710         }
1711
1712         /* Set Unicast and VXLAN steering rules */
1713         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 &&
1714             mlx4_en_set_rss_steer_rules(priv))
1715                 mlx4_warn(mdev, "Failed setting steering rules\n");
1716
1717         /* Attach rx QP to bradcast address */
1718         eth_broadcast_addr(&mc_list[10]);
1719         mc_list[5] = priv->port; /* needed for B0 steering support */
1720         if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1721                                   priv->port, 0, MLX4_PROT_ETH,
1722                                   &priv->broadcast_id))
1723                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1724
1725         /* Must redo promiscuous mode setup. */
1726         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1727
1728         /* Schedule multicast task to populate multicast list */
1729         queue_work(mdev->workqueue, &priv->rx_mode_task);
1730
1731         if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1732                 udp_tunnel_get_rx_info(dev);
1733
1734         priv->port_up = true;
1735         netif_tx_start_all_queues(dev);
1736         netif_device_attach(dev);
1737
1738         return 0;
1739
1740 tx_err:
1741         while (tx_index--) {
1742                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1743                 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1744         }
1745         mlx4_en_destroy_drop_qp(priv);
1746 rss_err:
1747         mlx4_en_release_rss_steer(priv);
1748 mac_err:
1749         mlx4_en_put_qp(priv);
1750 cq_err:
1751         while (rx_index--) {
1752                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1753                 mlx4_en_free_affinity_hint(priv, rx_index);
1754         }
1755         for (i = 0; i < priv->rx_ring_num; i++)
1756                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1757
1758         return err; /* need to close devices */
1759 }
1760
1761
1762 void mlx4_en_stop_port(struct net_device *dev, int detach)
1763 {
1764         struct mlx4_en_priv *priv = netdev_priv(dev);
1765         struct mlx4_en_dev *mdev = priv->mdev;
1766         struct mlx4_en_mc_list *mclist, *tmp;
1767         struct ethtool_flow_id *flow, *tmp_flow;
1768         int i;
1769         u8 mc_list[16] = {0};
1770
1771         if (!priv->port_up) {
1772                 en_dbg(DRV, priv, "stop port called while port already down\n");
1773                 return;
1774         }
1775
1776         /* close port*/
1777         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1778
1779         /* Synchronize with tx routine */
1780         netif_tx_lock_bh(dev);
1781         if (detach)
1782                 netif_device_detach(dev);
1783         netif_tx_stop_all_queues(dev);
1784         netif_tx_unlock_bh(dev);
1785
1786         netif_tx_disable(dev);
1787
1788         /* Set port as not active */
1789         priv->port_up = false;
1790         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1791
1792         /* Promsicuous mode */
1793         if (mdev->dev->caps.steering_mode ==
1794             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1795                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1796                                  MLX4_EN_FLAG_MC_PROMISC);
1797                 mlx4_flow_steer_promisc_remove(mdev->dev,
1798                                                priv->port,
1799                                                MLX4_FS_ALL_DEFAULT);
1800                 mlx4_flow_steer_promisc_remove(mdev->dev,
1801                                                priv->port,
1802                                                MLX4_FS_MC_DEFAULT);
1803         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1804                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1805
1806                 /* Disable promiscouos mode */
1807                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1808                                             priv->port);
1809
1810                 /* Disable Multicast promisc */
1811                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1812                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1813                                                       priv->port);
1814                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1815                 }
1816         }
1817
1818         /* Detach All multicasts */
1819         eth_broadcast_addr(&mc_list[10]);
1820         mc_list[5] = priv->port; /* needed for B0 steering support */
1821         mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1822                               MLX4_PROT_ETH, priv->broadcast_id);
1823         list_for_each_entry(mclist, &priv->curr_list, list) {
1824                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1825                 mc_list[5] = priv->port;
1826                 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1827                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1828                 if (mclist->tunnel_reg_id)
1829                         mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1830         }
1831         mlx4_en_clear_list(dev);
1832         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1833                 list_del(&mclist->list);
1834                 kfree(mclist);
1835         }
1836
1837         /* Flush multicast filter */
1838         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1839
1840         /* Remove flow steering rules for the port*/
1841         if (mdev->dev->caps.steering_mode ==
1842             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1843                 ASSERT_RTNL();
1844                 list_for_each_entry_safe(flow, tmp_flow,
1845                                          &priv->ethtool_list, list) {
1846                         mlx4_flow_detach(mdev->dev, flow->id);
1847                         list_del(&flow->list);
1848                 }
1849         }
1850
1851         mlx4_en_destroy_drop_qp(priv);
1852
1853         /* Free TX Rings */
1854         for (i = 0; i < priv->tx_ring_num; i++) {
1855                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1856                 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1857         }
1858         msleep(10);
1859
1860         for (i = 0; i < priv->tx_ring_num; i++)
1861                 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1862
1863         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1864                 mlx4_en_delete_rss_steer_rules(priv);
1865
1866         /* Free RSS qps */
1867         mlx4_en_release_rss_steer(priv);
1868
1869         /* Unregister Mac address for the port */
1870         mlx4_en_put_qp(priv);
1871         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1872                 mdev->mac_removed[priv->port] = 1;
1873
1874         /* Free RX Rings */
1875         for (i = 0; i < priv->rx_ring_num; i++) {
1876                 struct mlx4_en_cq *cq = priv->rx_cq[i];
1877
1878                 napi_synchronize(&cq->napi);
1879                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1880                 mlx4_en_deactivate_cq(priv, cq);
1881
1882                 mlx4_en_free_affinity_hint(priv, i);
1883         }
1884 }
1885
1886 static void mlx4_en_restart(struct work_struct *work)
1887 {
1888         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1889                                                  watchdog_task);
1890         struct mlx4_en_dev *mdev = priv->mdev;
1891         struct net_device *dev = priv->dev;
1892
1893         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1894
1895         rtnl_lock();
1896         mutex_lock(&mdev->state_lock);
1897         if (priv->port_up) {
1898                 mlx4_en_stop_port(dev, 1);
1899                 if (mlx4_en_start_port(dev))
1900                         en_err(priv, "Failed restarting port %d\n", priv->port);
1901         }
1902         mutex_unlock(&mdev->state_lock);
1903         rtnl_unlock();
1904 }
1905
1906 static void mlx4_en_clear_stats(struct net_device *dev)
1907 {
1908         struct mlx4_en_priv *priv = netdev_priv(dev);
1909         struct mlx4_en_dev *mdev = priv->mdev;
1910         int i;
1911
1912         if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1913                 en_dbg(HW, priv, "Failed dumping statistics\n");
1914
1915         memset(&priv->pstats, 0, sizeof(priv->pstats));
1916         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1917         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1918         memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats));
1919         memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats));
1920         memset(&priv->rx_priority_flowstats, 0,
1921                sizeof(priv->rx_priority_flowstats));
1922         memset(&priv->tx_priority_flowstats, 0,
1923                sizeof(priv->tx_priority_flowstats));
1924         memset(&priv->pf_stats, 0, sizeof(priv->pf_stats));
1925
1926         for (i = 0; i < priv->tx_ring_num; i++) {
1927                 priv->tx_ring[i]->bytes = 0;
1928                 priv->tx_ring[i]->packets = 0;
1929                 priv->tx_ring[i]->tx_csum = 0;
1930                 priv->tx_ring[i]->tx_dropped = 0;
1931                 priv->tx_ring[i]->queue_stopped = 0;
1932                 priv->tx_ring[i]->wake_queue = 0;
1933                 priv->tx_ring[i]->tso_packets = 0;
1934                 priv->tx_ring[i]->xmit_more = 0;
1935         }
1936         for (i = 0; i < priv->rx_ring_num; i++) {
1937                 priv->rx_ring[i]->bytes = 0;
1938                 priv->rx_ring[i]->packets = 0;
1939                 priv->rx_ring[i]->csum_ok = 0;
1940                 priv->rx_ring[i]->csum_none = 0;
1941                 priv->rx_ring[i]->csum_complete = 0;
1942         }
1943 }
1944
1945 static int mlx4_en_open(struct net_device *dev)
1946 {
1947         struct mlx4_en_priv *priv = netdev_priv(dev);
1948         struct mlx4_en_dev *mdev = priv->mdev;
1949         int err = 0;
1950
1951         mutex_lock(&mdev->state_lock);
1952
1953         if (!mdev->device_up) {
1954                 en_err(priv, "Cannot open - device down/disabled\n");
1955                 err = -EBUSY;
1956                 goto out;
1957         }
1958
1959         /* Reset HW statistics and SW counters */
1960         mlx4_en_clear_stats(dev);
1961
1962         err = mlx4_en_start_port(dev);
1963         if (err)
1964                 en_err(priv, "Failed starting port:%d\n", priv->port);
1965
1966 out:
1967         mutex_unlock(&mdev->state_lock);
1968         return err;
1969 }
1970
1971
1972 static int mlx4_en_close(struct net_device *dev)
1973 {
1974         struct mlx4_en_priv *priv = netdev_priv(dev);
1975         struct mlx4_en_dev *mdev = priv->mdev;
1976
1977         en_dbg(IFDOWN, priv, "Close port called\n");
1978
1979         mutex_lock(&mdev->state_lock);
1980
1981         mlx4_en_stop_port(dev, 0);
1982         netif_carrier_off(dev);
1983
1984         mutex_unlock(&mdev->state_lock);
1985         return 0;
1986 }
1987
1988 static void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1989 {
1990         int i;
1991
1992 #ifdef CONFIG_RFS_ACCEL
1993         priv->dev->rx_cpu_rmap = NULL;
1994 #endif
1995
1996         for (i = 0; i < priv->tx_ring_num; i++) {
1997                 if (priv->tx_ring && priv->tx_ring[i])
1998                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1999                 if (priv->tx_cq && priv->tx_cq[i])
2000                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
2001         }
2002
2003         for (i = 0; i < priv->rx_ring_num; i++) {
2004                 if (priv->rx_ring[i])
2005                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2006                                 priv->prof->rx_ring_size, priv->stride);
2007                 if (priv->rx_cq[i])
2008                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2009         }
2010
2011 }
2012
2013 static int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
2014 {
2015         struct mlx4_en_port_profile *prof = priv->prof;
2016         int i;
2017         int node;
2018
2019         /* Create tx Rings */
2020         for (i = 0; i < priv->tx_ring_num; i++) {
2021                 node = cpu_to_node(i % num_online_cpus());
2022                 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
2023                                       prof->tx_ring_size, i, TX, node))
2024                         goto err;
2025
2026                 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
2027                                            prof->tx_ring_size, TXBB_SIZE,
2028                                            node, i))
2029                         goto err;
2030         }
2031
2032         /* Create rx Rings */
2033         for (i = 0; i < priv->rx_ring_num; i++) {
2034                 node = cpu_to_node(i % num_online_cpus());
2035                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2036                                       prof->rx_ring_size, i, RX, node))
2037                         goto err;
2038
2039                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2040                                            prof->rx_ring_size, priv->stride,
2041                                            node))
2042                         goto err;
2043         }
2044
2045 #ifdef CONFIG_RFS_ACCEL
2046         priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port);
2047 #endif
2048
2049         return 0;
2050
2051 err:
2052         en_err(priv, "Failed to allocate NIC resources\n");
2053         for (i = 0; i < priv->rx_ring_num; i++) {
2054                 if (priv->rx_ring[i])
2055                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2056                                                 prof->rx_ring_size,
2057                                                 priv->stride);
2058                 if (priv->rx_cq[i])
2059                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2060         }
2061         for (i = 0; i < priv->tx_ring_num; i++) {
2062                 if (priv->tx_ring[i])
2063                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
2064                 if (priv->tx_cq[i])
2065                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
2066         }
2067         return -ENOMEM;
2068 }
2069
2070 static void mlx4_en_shutdown(struct net_device *dev)
2071 {
2072         rtnl_lock();
2073         netif_device_detach(dev);
2074         mlx4_en_close(dev);
2075         rtnl_unlock();
2076 }
2077
2078 static int mlx4_en_copy_priv(struct mlx4_en_priv *dst,
2079                              struct mlx4_en_priv *src,
2080                              struct mlx4_en_port_profile *prof)
2081 {
2082         memcpy(&dst->hwtstamp_config, &prof->hwtstamp_config,
2083                sizeof(dst->hwtstamp_config));
2084         dst->num_tx_rings_p_up = src->mdev->profile.num_tx_rings_p_up;
2085         dst->tx_ring_num = prof->tx_ring_num;
2086         dst->rx_ring_num = prof->rx_ring_num;
2087         dst->flags = prof->flags;
2088         dst->mdev = src->mdev;
2089         dst->port = src->port;
2090         dst->dev = src->dev;
2091         dst->prof = prof;
2092         dst->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2093                                          DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2094
2095         dst->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS,
2096                                 GFP_KERNEL);
2097         if (!dst->tx_ring)
2098                 return -ENOMEM;
2099
2100         dst->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS,
2101                               GFP_KERNEL);
2102         if (!dst->tx_cq) {
2103                 kfree(dst->tx_ring);
2104                 return -ENOMEM;
2105         }
2106         return 0;
2107 }
2108
2109 static void mlx4_en_update_priv(struct mlx4_en_priv *dst,
2110                                 struct mlx4_en_priv *src)
2111 {
2112         memcpy(dst->rx_ring, src->rx_ring,
2113                sizeof(struct mlx4_en_rx_ring *) * src->rx_ring_num);
2114         memcpy(dst->rx_cq, src->rx_cq,
2115                sizeof(struct mlx4_en_cq *) * src->rx_ring_num);
2116         memcpy(&dst->hwtstamp_config, &src->hwtstamp_config,
2117                sizeof(dst->hwtstamp_config));
2118         dst->tx_ring_num = src->tx_ring_num;
2119         dst->rx_ring_num = src->rx_ring_num;
2120         dst->tx_ring = src->tx_ring;
2121         dst->tx_cq = src->tx_cq;
2122         memcpy(dst->prof, src->prof, sizeof(struct mlx4_en_port_profile));
2123 }
2124
2125 int mlx4_en_try_alloc_resources(struct mlx4_en_priv *priv,
2126                                 struct mlx4_en_priv *tmp,
2127                                 struct mlx4_en_port_profile *prof)
2128 {
2129         mlx4_en_copy_priv(tmp, priv, prof);
2130
2131         if (mlx4_en_alloc_resources(tmp)) {
2132                 en_warn(priv,
2133                         "%s: Resource allocation failed, using previous configuration\n",
2134                         __func__);
2135                 kfree(tmp->tx_ring);
2136                 kfree(tmp->tx_cq);
2137                 return -ENOMEM;
2138         }
2139         return 0;
2140 }
2141
2142 void mlx4_en_safe_replace_resources(struct mlx4_en_priv *priv,
2143                                     struct mlx4_en_priv *tmp)
2144 {
2145         mlx4_en_free_resources(priv);
2146         mlx4_en_update_priv(priv, tmp);
2147 }
2148
2149 void mlx4_en_destroy_netdev(struct net_device *dev)
2150 {
2151         struct mlx4_en_priv *priv = netdev_priv(dev);
2152         struct mlx4_en_dev *mdev = priv->mdev;
2153         bool shutdown = mdev->dev->persist->interface_state &
2154                                             MLX4_INTERFACE_STATE_SHUTDOWN;
2155
2156         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2157
2158         /* Unregister device - this will close the port if it was up */
2159         if (priv->registered) {
2160                 devlink_port_type_clear(mlx4_get_devlink_port(mdev->dev,
2161                                                               priv->port));
2162                 if (shutdown)
2163                         mlx4_en_shutdown(dev);
2164                 else
2165                         unregister_netdev(dev);
2166         }
2167
2168         if (priv->allocated)
2169                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2170
2171         cancel_delayed_work(&priv->stats_task);
2172         cancel_delayed_work(&priv->service_task);
2173         /* flush any pending task for this netdev */
2174         flush_workqueue(mdev->workqueue);
2175
2176         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2177                 mlx4_en_remove_timestamp(mdev);
2178
2179         /* Detach the netdev so tasks would not attempt to access it */
2180         mutex_lock(&mdev->state_lock);
2181         mdev->pndev[priv->port] = NULL;
2182         mdev->upper[priv->port] = NULL;
2183         mutex_unlock(&mdev->state_lock);
2184
2185 #ifdef CONFIG_RFS_ACCEL
2186         mlx4_en_cleanup_filters(priv);
2187 #endif
2188
2189         mlx4_en_free_resources(priv);
2190
2191         kfree(priv->tx_ring);
2192         kfree(priv->tx_cq);
2193
2194         if (!shutdown)
2195                 free_netdev(dev);
2196 }
2197
2198 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2199 {
2200         struct mlx4_en_priv *priv = netdev_priv(dev);
2201         struct mlx4_en_dev *mdev = priv->mdev;
2202         int err = 0;
2203
2204         en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2205                  dev->mtu, new_mtu);
2206
2207         if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
2208                 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
2209                 return -EPERM;
2210         }
2211         if (priv->xdp_ring_num && MLX4_EN_EFF_MTU(new_mtu) > FRAG_SZ0) {
2212                 en_err(priv, "MTU size:%d requires frags but XDP running\n",
2213                        new_mtu);
2214                 return -EOPNOTSUPP;
2215         }
2216         dev->mtu = new_mtu;
2217
2218         if (netif_running(dev)) {
2219                 mutex_lock(&mdev->state_lock);
2220                 if (!mdev->device_up) {
2221                         /* NIC is probably restarting - let watchdog task reset
2222                          * the port */
2223                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2224                 } else {
2225                         mlx4_en_stop_port(dev, 1);
2226                         err = mlx4_en_start_port(dev);
2227                         if (err) {
2228                                 en_err(priv, "Failed restarting port:%d\n",
2229                                          priv->port);
2230                                 queue_work(mdev->workqueue, &priv->watchdog_task);
2231                         }
2232                 }
2233                 mutex_unlock(&mdev->state_lock);
2234         }
2235         return 0;
2236 }
2237
2238 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2239 {
2240         struct mlx4_en_priv *priv = netdev_priv(dev);
2241         struct mlx4_en_dev *mdev = priv->mdev;
2242         struct hwtstamp_config config;
2243
2244         if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2245                 return -EFAULT;
2246
2247         /* reserved for future extensions */
2248         if (config.flags)
2249                 return -EINVAL;
2250
2251         /* device doesn't support time stamping */
2252         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2253                 return -EINVAL;
2254
2255         /* TX HW timestamp */
2256         switch (config.tx_type) {
2257         case HWTSTAMP_TX_OFF:
2258         case HWTSTAMP_TX_ON:
2259                 break;
2260         default:
2261                 return -ERANGE;
2262         }
2263
2264         /* RX HW timestamp */
2265         switch (config.rx_filter) {
2266         case HWTSTAMP_FILTER_NONE:
2267                 break;
2268         case HWTSTAMP_FILTER_ALL:
2269         case HWTSTAMP_FILTER_SOME:
2270         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2271         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2272         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2273         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2274         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2275         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2276         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2277         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2278         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2279         case HWTSTAMP_FILTER_PTP_V2_EVENT:
2280         case HWTSTAMP_FILTER_PTP_V2_SYNC:
2281         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2282                 config.rx_filter = HWTSTAMP_FILTER_ALL;
2283                 break;
2284         default:
2285                 return -ERANGE;
2286         }
2287
2288         if (mlx4_en_reset_config(dev, config, dev->features)) {
2289                 config.tx_type = HWTSTAMP_TX_OFF;
2290                 config.rx_filter = HWTSTAMP_FILTER_NONE;
2291         }
2292
2293         return copy_to_user(ifr->ifr_data, &config,
2294                             sizeof(config)) ? -EFAULT : 0;
2295 }
2296
2297 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2298 {
2299         struct mlx4_en_priv *priv = netdev_priv(dev);
2300
2301         return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2302                             sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2303 }
2304
2305 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2306 {
2307         switch (cmd) {
2308         case SIOCSHWTSTAMP:
2309                 return mlx4_en_hwtstamp_set(dev, ifr);
2310         case SIOCGHWTSTAMP:
2311                 return mlx4_en_hwtstamp_get(dev, ifr);
2312         default:
2313                 return -EOPNOTSUPP;
2314         }
2315 }
2316
2317 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev,
2318                                               netdev_features_t features)
2319 {
2320         struct mlx4_en_priv *en_priv = netdev_priv(netdev);
2321         struct mlx4_en_dev *mdev = en_priv->mdev;
2322
2323         /* Since there is no support for separate RX C-TAG/S-TAG vlan accel
2324          * enable/disable make sure S-TAG flag is always in same state as
2325          * C-TAG.
2326          */
2327         if (features & NETIF_F_HW_VLAN_CTAG_RX &&
2328             !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2329                 features |= NETIF_F_HW_VLAN_STAG_RX;
2330         else
2331                 features &= ~NETIF_F_HW_VLAN_STAG_RX;
2332
2333         return features;
2334 }
2335
2336 static int mlx4_en_set_features(struct net_device *netdev,
2337                 netdev_features_t features)
2338 {
2339         struct mlx4_en_priv *priv = netdev_priv(netdev);
2340         bool reset = false;
2341         int ret = 0;
2342
2343         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) {
2344                 en_info(priv, "Turn %s RX-FCS\n",
2345                         (features & NETIF_F_RXFCS) ? "ON" : "OFF");
2346                 reset = true;
2347         }
2348
2349         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {
2350                 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;
2351
2352                 en_info(priv, "Turn %s RX-ALL\n",
2353                         ignore_fcs_value ? "ON" : "OFF");
2354                 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev,
2355                                               priv->port, ignore_fcs_value);
2356                 if (ret)
2357                         return ret;
2358         }
2359
2360         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2361                 en_info(priv, "Turn %s RX vlan strip offload\n",
2362                         (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
2363                 reset = true;
2364         }
2365
2366         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX))
2367                 en_info(priv, "Turn %s TX vlan strip offload\n",
2368                         (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF");
2369
2370         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX))
2371                 en_info(priv, "Turn %s TX S-VLAN strip offload\n",
2372                         (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF");
2373
2374         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) {
2375                 en_info(priv, "Turn %s loopback\n",
2376                         (features & NETIF_F_LOOPBACK) ? "ON" : "OFF");
2377                 mlx4_en_update_loopback_state(netdev, features);
2378         }
2379
2380         if (reset) {
2381                 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config,
2382                                            features);
2383                 if (ret)
2384                         return ret;
2385         }
2386
2387         return 0;
2388 }
2389
2390 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2391 {
2392         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2393         struct mlx4_en_dev *mdev = en_priv->mdev;
2394         u64 mac_u64 = mlx4_mac_to_u64(mac);
2395
2396         if (is_multicast_ether_addr(mac))
2397                 return -EINVAL;
2398
2399         return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2400 }
2401
2402 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2403 {
2404         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2405         struct mlx4_en_dev *mdev = en_priv->mdev;
2406
2407         return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2408 }
2409
2410 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
2411                                int max_tx_rate)
2412 {
2413         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2414         struct mlx4_en_dev *mdev = en_priv->mdev;
2415
2416         return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate,
2417                                 max_tx_rate);
2418 }
2419
2420 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2421 {
2422         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2423         struct mlx4_en_dev *mdev = en_priv->mdev;
2424
2425         return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2426 }
2427
2428 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2429 {
2430         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2431         struct mlx4_en_dev *mdev = en_priv->mdev;
2432
2433         return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2434 }
2435
2436 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2437 {
2438         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2439         struct mlx4_en_dev *mdev = en_priv->mdev;
2440
2441         return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2442 }
2443
2444 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf,
2445                                 struct ifla_vf_stats *vf_stats)
2446 {
2447         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2448         struct mlx4_en_dev *mdev = en_priv->mdev;
2449
2450         return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats);
2451 }
2452
2453 #define PORT_ID_BYTE_LEN 8
2454 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2455                                     struct netdev_phys_item_id *ppid)
2456 {
2457         struct mlx4_en_priv *priv = netdev_priv(dev);
2458         struct mlx4_dev *mdev = priv->mdev->dev;
2459         int i;
2460         u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2461
2462         if (!phys_port_id)
2463                 return -EOPNOTSUPP;
2464
2465         ppid->id_len = sizeof(phys_port_id);
2466         for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2467                 ppid->id[i] =  phys_port_id & 0xff;
2468                 phys_port_id >>= 8;
2469         }
2470         return 0;
2471 }
2472
2473 static void mlx4_en_add_vxlan_offloads(struct work_struct *work)
2474 {
2475         int ret;
2476         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2477                                                  vxlan_add_task);
2478
2479         ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2480         if (ret)
2481                 goto out;
2482
2483         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2484                                   VXLAN_STEER_BY_OUTER_MAC, 1);
2485 out:
2486         if (ret) {
2487                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2488                 return;
2489         }
2490
2491         /* set offloads */
2492         priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2493                                       NETIF_F_RXCSUM |
2494                                       NETIF_F_TSO | NETIF_F_TSO6 |
2495                                       NETIF_F_GSO_UDP_TUNNEL |
2496                                       NETIF_F_GSO_UDP_TUNNEL_CSUM |
2497                                       NETIF_F_GSO_PARTIAL;
2498 }
2499
2500 static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
2501 {
2502         int ret;
2503         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2504                                                  vxlan_del_task);
2505         /* unset offloads */
2506         priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2507                                         NETIF_F_RXCSUM |
2508                                         NETIF_F_TSO | NETIF_F_TSO6 |
2509                                         NETIF_F_GSO_UDP_TUNNEL |
2510                                         NETIF_F_GSO_UDP_TUNNEL_CSUM |
2511                                         NETIF_F_GSO_PARTIAL);
2512
2513         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2514                                   VXLAN_STEER_BY_OUTER_MAC, 0);
2515         if (ret)
2516                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2517
2518         priv->vxlan_port = 0;
2519 }
2520
2521 static void mlx4_en_add_vxlan_port(struct  net_device *dev,
2522                                    struct udp_tunnel_info *ti)
2523 {
2524         struct mlx4_en_priv *priv = netdev_priv(dev);
2525         __be16 port = ti->port;
2526         __be16 current_port;
2527
2528         if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
2529                 return;
2530
2531         if (ti->sa_family != AF_INET)
2532                 return;
2533
2534         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2535                 return;
2536
2537         current_port = priv->vxlan_port;
2538         if (current_port && current_port != port) {
2539                 en_warn(priv, "vxlan port %d configured, can't add port %d\n",
2540                         ntohs(current_port), ntohs(port));
2541                 return;
2542         }
2543
2544         priv->vxlan_port = port;
2545         queue_work(priv->mdev->workqueue, &priv->vxlan_add_task);
2546 }
2547
2548 static void mlx4_en_del_vxlan_port(struct  net_device *dev,
2549                                    struct udp_tunnel_info *ti)
2550 {
2551         struct mlx4_en_priv *priv = netdev_priv(dev);
2552         __be16 port = ti->port;
2553         __be16 current_port;
2554
2555         if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
2556                 return;
2557
2558         if (ti->sa_family != AF_INET)
2559                 return;
2560
2561         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2562                 return;
2563
2564         current_port = priv->vxlan_port;
2565         if (current_port != port) {
2566                 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port));
2567                 return;
2568         }
2569
2570         queue_work(priv->mdev->workqueue, &priv->vxlan_del_task);
2571 }
2572
2573 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2574                                                 struct net_device *dev,
2575                                                 netdev_features_t features)
2576 {
2577         features = vlan_features_check(skb, features);
2578         features = vxlan_features_check(skb, features);
2579
2580         /* The ConnectX-3 doesn't support outer IPv6 checksums but it does
2581          * support inner IPv6 checksums and segmentation so  we need to
2582          * strip that feature if this is an IPv6 encapsulated frame.
2583          */
2584         if (skb->encapsulation &&
2585             (skb->ip_summed == CHECKSUM_PARTIAL)) {
2586                 struct mlx4_en_priv *priv = netdev_priv(dev);
2587
2588                 if (!priv->vxlan_port ||
2589                     (ip_hdr(skb)->version != 4) ||
2590                     (udp_hdr(skb)->dest != priv->vxlan_port))
2591                         features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
2592         }
2593
2594         return features;
2595 }
2596
2597 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate)
2598 {
2599         struct mlx4_en_priv *priv = netdev_priv(dev);
2600         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[queue_index];
2601         struct mlx4_update_qp_params params;
2602         int err;
2603
2604         if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT))
2605                 return -EOPNOTSUPP;
2606
2607         /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */
2608         if (maxrate >> 12) {
2609                 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS;
2610                 params.rate_val  = maxrate / 1000;
2611         } else if (maxrate) {
2612                 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS;
2613                 params.rate_val  = maxrate;
2614         } else { /* zero serves to revoke the QP rate-limitation */
2615                 params.rate_unit = 0;
2616                 params.rate_val  = 0;
2617         }
2618
2619         err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT,
2620                              &params);
2621         return err;
2622 }
2623
2624 static int mlx4_xdp_set(struct net_device *dev, struct bpf_prog *prog)
2625 {
2626         struct mlx4_en_priv *priv = netdev_priv(dev);
2627         struct mlx4_en_dev *mdev = priv->mdev;
2628         struct bpf_prog *old_prog;
2629         int xdp_ring_num;
2630         int port_up = 0;
2631         int err;
2632         int i;
2633
2634         xdp_ring_num = prog ? ALIGN(priv->rx_ring_num, MLX4_EN_NUM_UP) : 0;
2635
2636         /* No need to reconfigure buffers when simply swapping the
2637          * program for a new one.
2638          */
2639         if (priv->xdp_ring_num == xdp_ring_num) {
2640                 if (prog) {
2641                         prog = bpf_prog_add(prog, priv->rx_ring_num - 1);
2642                         if (IS_ERR(prog))
2643                                 return PTR_ERR(prog);
2644                 }
2645                 for (i = 0; i < priv->rx_ring_num; i++) {
2646                         /* This xchg is paired with READ_ONCE in the fastpath */
2647                         old_prog = xchg(&priv->rx_ring[i]->xdp_prog, prog);
2648                         if (old_prog)
2649                                 bpf_prog_put(old_prog);
2650                 }
2651                 return 0;
2652         }
2653
2654         if (priv->num_frags > 1) {
2655                 en_err(priv, "Cannot set XDP if MTU requires multiple frags\n");
2656                 return -EOPNOTSUPP;
2657         }
2658
2659         if (priv->tx_ring_num < xdp_ring_num + MLX4_EN_NUM_UP) {
2660                 en_err(priv,
2661                        "Minimum %d tx channels required to run XDP\n",
2662                        (xdp_ring_num + MLX4_EN_NUM_UP) / MLX4_EN_NUM_UP);
2663                 return -EINVAL;
2664         }
2665
2666         if (prog) {
2667                 prog = bpf_prog_add(prog, priv->rx_ring_num - 1);
2668                 if (IS_ERR(prog))
2669                         return PTR_ERR(prog);
2670         }
2671
2672         mutex_lock(&mdev->state_lock);
2673         if (priv->port_up) {
2674                 port_up = 1;
2675                 mlx4_en_stop_port(dev, 1);
2676         }
2677
2678         priv->xdp_ring_num = xdp_ring_num;
2679         netif_set_real_num_tx_queues(dev, priv->tx_ring_num -
2680                                                         priv->xdp_ring_num);
2681
2682         for (i = 0; i < priv->rx_ring_num; i++) {
2683                 old_prog = xchg(&priv->rx_ring[i]->xdp_prog, prog);
2684                 if (old_prog)
2685                         bpf_prog_put(old_prog);
2686         }
2687
2688         if (port_up) {
2689                 err = mlx4_en_start_port(dev);
2690                 if (err) {
2691                         en_err(priv, "Failed starting port %d for XDP change\n",
2692                                priv->port);
2693                         queue_work(mdev->workqueue, &priv->watchdog_task);
2694                 }
2695         }
2696
2697         mutex_unlock(&mdev->state_lock);
2698         return 0;
2699 }
2700
2701 static bool mlx4_xdp_attached(struct net_device *dev)
2702 {
2703         struct mlx4_en_priv *priv = netdev_priv(dev);
2704
2705         return !!priv->xdp_ring_num;
2706 }
2707
2708 static int mlx4_xdp(struct net_device *dev, struct netdev_xdp *xdp)
2709 {
2710         switch (xdp->command) {
2711         case XDP_SETUP_PROG:
2712                 return mlx4_xdp_set(dev, xdp->prog);
2713         case XDP_QUERY_PROG:
2714                 xdp->prog_attached = mlx4_xdp_attached(dev);
2715                 return 0;
2716         default:
2717                 return -EINVAL;
2718         }
2719 }
2720
2721 static const struct net_device_ops mlx4_netdev_ops = {
2722         .ndo_open               = mlx4_en_open,
2723         .ndo_stop               = mlx4_en_close,
2724         .ndo_start_xmit         = mlx4_en_xmit,
2725         .ndo_select_queue       = mlx4_en_select_queue,
2726         .ndo_get_stats64        = mlx4_en_get_stats64,
2727         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2728         .ndo_set_mac_address    = mlx4_en_set_mac,
2729         .ndo_validate_addr      = eth_validate_addr,
2730         .ndo_change_mtu         = mlx4_en_change_mtu,
2731         .ndo_do_ioctl           = mlx4_en_ioctl,
2732         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2733         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2734         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2735 #ifdef CONFIG_NET_POLL_CONTROLLER
2736         .ndo_poll_controller    = mlx4_en_netpoll,
2737 #endif
2738         .ndo_set_features       = mlx4_en_set_features,
2739         .ndo_fix_features       = mlx4_en_fix_features,
2740         .ndo_setup_tc           = __mlx4_en_setup_tc,
2741 #ifdef CONFIG_RFS_ACCEL
2742         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2743 #endif
2744         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2745         .ndo_udp_tunnel_add     = mlx4_en_add_vxlan_port,
2746         .ndo_udp_tunnel_del     = mlx4_en_del_vxlan_port,
2747         .ndo_features_check     = mlx4_en_features_check,
2748         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2749         .ndo_xdp                = mlx4_xdp,
2750 };
2751
2752 static const struct net_device_ops mlx4_netdev_ops_master = {
2753         .ndo_open               = mlx4_en_open,
2754         .ndo_stop               = mlx4_en_close,
2755         .ndo_start_xmit         = mlx4_en_xmit,
2756         .ndo_select_queue       = mlx4_en_select_queue,
2757         .ndo_get_stats64        = mlx4_en_get_stats64,
2758         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2759         .ndo_set_mac_address    = mlx4_en_set_mac,
2760         .ndo_validate_addr      = eth_validate_addr,
2761         .ndo_change_mtu         = mlx4_en_change_mtu,
2762         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2763         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2764         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2765         .ndo_set_vf_mac         = mlx4_en_set_vf_mac,
2766         .ndo_set_vf_vlan        = mlx4_en_set_vf_vlan,
2767         .ndo_set_vf_rate        = mlx4_en_set_vf_rate,
2768         .ndo_set_vf_spoofchk    = mlx4_en_set_vf_spoofchk,
2769         .ndo_set_vf_link_state  = mlx4_en_set_vf_link_state,
2770         .ndo_get_vf_stats       = mlx4_en_get_vf_stats,
2771         .ndo_get_vf_config      = mlx4_en_get_vf_config,
2772 #ifdef CONFIG_NET_POLL_CONTROLLER
2773         .ndo_poll_controller    = mlx4_en_netpoll,
2774 #endif
2775         .ndo_set_features       = mlx4_en_set_features,
2776         .ndo_fix_features       = mlx4_en_fix_features,
2777         .ndo_setup_tc           = __mlx4_en_setup_tc,
2778 #ifdef CONFIG_RFS_ACCEL
2779         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2780 #endif
2781         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2782         .ndo_udp_tunnel_add     = mlx4_en_add_vxlan_port,
2783         .ndo_udp_tunnel_del     = mlx4_en_del_vxlan_port,
2784         .ndo_features_check     = mlx4_en_features_check,
2785         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2786         .ndo_xdp                = mlx4_xdp,
2787 };
2788
2789 struct mlx4_en_bond {
2790         struct work_struct work;
2791         struct mlx4_en_priv *priv;
2792         int is_bonded;
2793         struct mlx4_port_map port_map;
2794 };
2795
2796 static void mlx4_en_bond_work(struct work_struct *work)
2797 {
2798         struct mlx4_en_bond *bond = container_of(work,
2799                                                      struct mlx4_en_bond,
2800                                                      work);
2801         int err = 0;
2802         struct mlx4_dev *dev = bond->priv->mdev->dev;
2803
2804         if (bond->is_bonded) {
2805                 if (!mlx4_is_bonded(dev)) {
2806                         err = mlx4_bond(dev);
2807                         if (err)
2808                                 en_err(bond->priv, "Fail to bond device\n");
2809                 }
2810                 if (!err) {
2811                         err = mlx4_port_map_set(dev, &bond->port_map);
2812                         if (err)
2813                                 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n",
2814                                        bond->port_map.port1,
2815                                        bond->port_map.port2,
2816                                        err);
2817                 }
2818         } else if (mlx4_is_bonded(dev)) {
2819                 err = mlx4_unbond(dev);
2820                 if (err)
2821                         en_err(bond->priv, "Fail to unbond device\n");
2822         }
2823         dev_put(bond->priv->dev);
2824         kfree(bond);
2825 }
2826
2827 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded,
2828                                    u8 v2p_p1, u8 v2p_p2)
2829 {
2830         struct mlx4_en_bond *bond = NULL;
2831
2832         bond = kzalloc(sizeof(*bond), GFP_ATOMIC);
2833         if (!bond)
2834                 return -ENOMEM;
2835
2836         INIT_WORK(&bond->work, mlx4_en_bond_work);
2837         bond->priv = priv;
2838         bond->is_bonded = is_bonded;
2839         bond->port_map.port1 = v2p_p1;
2840         bond->port_map.port2 = v2p_p2;
2841         dev_hold(priv->dev);
2842         queue_work(priv->mdev->workqueue, &bond->work);
2843         return 0;
2844 }
2845
2846 int mlx4_en_netdev_event(struct notifier_block *this,
2847                          unsigned long event, void *ptr)
2848 {
2849         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
2850         u8 port = 0;
2851         struct mlx4_en_dev *mdev;
2852         struct mlx4_dev *dev;
2853         int i, num_eth_ports = 0;
2854         bool do_bond = true;
2855         struct mlx4_en_priv *priv;
2856         u8 v2p_port1 = 0;
2857         u8 v2p_port2 = 0;
2858
2859         if (!net_eq(dev_net(ndev), &init_net))
2860                 return NOTIFY_DONE;
2861
2862         mdev = container_of(this, struct mlx4_en_dev, nb);
2863         dev = mdev->dev;
2864
2865         /* Go into this mode only when two network devices set on two ports
2866          * of the same mlx4 device are slaves of the same bonding master
2867          */
2868         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
2869                 ++num_eth_ports;
2870                 if (!port && (mdev->pndev[i] == ndev))
2871                         port = i;
2872                 mdev->upper[i] = mdev->pndev[i] ?
2873                         netdev_master_upper_dev_get(mdev->pndev[i]) : NULL;
2874                 /* condition not met: network device is a slave */
2875                 if (!mdev->upper[i])
2876                         do_bond = false;
2877                 if (num_eth_ports < 2)
2878                         continue;
2879                 /* condition not met: same master */
2880                 if (mdev->upper[i] != mdev->upper[i-1])
2881                         do_bond = false;
2882         }
2883         /* condition not met: 2 salves */
2884         do_bond = (num_eth_ports ==  2) ? do_bond : false;
2885
2886         /* handle only events that come with enough info */
2887         if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port)
2888                 return NOTIFY_DONE;
2889
2890         priv = netdev_priv(ndev);
2891         if (do_bond) {
2892                 struct netdev_notifier_bonding_info *notifier_info = ptr;
2893                 struct netdev_bonding_info *bonding_info =
2894                         &notifier_info->bonding_info;
2895
2896                 /* required mode 1, 2 or 4 */
2897                 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) &&
2898                     (bonding_info->master.bond_mode != BOND_MODE_XOR) &&
2899                     (bonding_info->master.bond_mode != BOND_MODE_8023AD))
2900                         do_bond = false;
2901
2902                 /* require exactly 2 slaves */
2903                 if (bonding_info->master.num_slaves != 2)
2904                         do_bond = false;
2905
2906                 /* calc v2p */
2907                 if (do_bond) {
2908                         if (bonding_info->master.bond_mode ==
2909                             BOND_MODE_ACTIVEBACKUP) {
2910                                 /* in active-backup mode virtual ports are
2911                                  * mapped to the physical port of the active
2912                                  * slave */
2913                                 if (bonding_info->slave.state ==
2914                                     BOND_STATE_BACKUP) {
2915                                         if (port == 1) {
2916                                                 v2p_port1 = 2;
2917                                                 v2p_port2 = 2;
2918                                         } else {
2919                                                 v2p_port1 = 1;
2920                                                 v2p_port2 = 1;
2921                                         }
2922                                 } else { /* BOND_STATE_ACTIVE */
2923                                         if (port == 1) {
2924                                                 v2p_port1 = 1;
2925                                                 v2p_port2 = 1;
2926                                         } else {
2927                                                 v2p_port1 = 2;
2928                                                 v2p_port2 = 2;
2929                                         }
2930                                 }
2931                         } else { /* Active-Active */
2932                                 /* in active-active mode a virtual port is
2933                                  * mapped to the native physical port if and only
2934                                  * if the physical port is up */
2935                                 __s8 link = bonding_info->slave.link;
2936
2937                                 if (port == 1)
2938                                         v2p_port2 = 2;
2939                                 else
2940                                         v2p_port1 = 1;
2941                                 if ((link == BOND_LINK_UP) ||
2942                                     (link == BOND_LINK_FAIL)) {
2943                                         if (port == 1)
2944                                                 v2p_port1 = 1;
2945                                         else
2946                                                 v2p_port2 = 2;
2947                                 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */
2948                                         if (port == 1)
2949                                                 v2p_port1 = 2;
2950                                         else
2951                                                 v2p_port2 = 1;
2952                                 }
2953                         }
2954                 }
2955         }
2956
2957         mlx4_en_queue_bond_work(priv, do_bond,
2958                                 v2p_port1, v2p_port2);
2959
2960         return NOTIFY_DONE;
2961 }
2962
2963 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
2964                                      struct mlx4_en_stats_bitmap *stats_bitmap,
2965                                      u8 rx_ppp, u8 rx_pause,
2966                                      u8 tx_ppp, u8 tx_pause)
2967 {
2968         int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS;
2969
2970         if (!mlx4_is_slave(dev) &&
2971             (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
2972                 mutex_lock(&stats_bitmap->mutex);
2973                 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS);
2974
2975                 if (rx_ppp)
2976                         bitmap_set(stats_bitmap->bitmap, last_i,
2977                                    NUM_FLOW_PRIORITY_STATS_RX);
2978                 last_i += NUM_FLOW_PRIORITY_STATS_RX;
2979
2980                 if (rx_pause && !(rx_ppp))
2981                         bitmap_set(stats_bitmap->bitmap, last_i,
2982                                    NUM_FLOW_STATS_RX);
2983                 last_i += NUM_FLOW_STATS_RX;
2984
2985                 if (tx_ppp)
2986                         bitmap_set(stats_bitmap->bitmap, last_i,
2987                                    NUM_FLOW_PRIORITY_STATS_TX);
2988                 last_i += NUM_FLOW_PRIORITY_STATS_TX;
2989
2990                 if (tx_pause && !(tx_ppp))
2991                         bitmap_set(stats_bitmap->bitmap, last_i,
2992                                    NUM_FLOW_STATS_TX);
2993                 last_i += NUM_FLOW_STATS_TX;
2994
2995                 mutex_unlock(&stats_bitmap->mutex);
2996         }
2997 }
2998
2999 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
3000                               struct mlx4_en_stats_bitmap *stats_bitmap,
3001                               u8 rx_ppp, u8 rx_pause,
3002                               u8 tx_ppp, u8 tx_pause)
3003 {
3004         int last_i = 0;
3005
3006         mutex_init(&stats_bitmap->mutex);
3007         bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS);
3008
3009         if (mlx4_is_slave(dev)) {
3010                 bitmap_set(stats_bitmap->bitmap, last_i +
3011                                          MLX4_FIND_NETDEV_STAT(rx_packets), 1);
3012                 bitmap_set(stats_bitmap->bitmap, last_i +
3013                                          MLX4_FIND_NETDEV_STAT(tx_packets), 1);
3014                 bitmap_set(stats_bitmap->bitmap, last_i +
3015                                          MLX4_FIND_NETDEV_STAT(rx_bytes), 1);
3016                 bitmap_set(stats_bitmap->bitmap, last_i +
3017                                          MLX4_FIND_NETDEV_STAT(tx_bytes), 1);
3018                 bitmap_set(stats_bitmap->bitmap, last_i +
3019                                          MLX4_FIND_NETDEV_STAT(rx_dropped), 1);
3020                 bitmap_set(stats_bitmap->bitmap, last_i +
3021                                          MLX4_FIND_NETDEV_STAT(tx_dropped), 1);
3022         } else {
3023                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS);
3024         }
3025         last_i += NUM_MAIN_STATS;
3026
3027         bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS);
3028         last_i += NUM_PORT_STATS;
3029
3030         if (mlx4_is_master(dev))
3031                 bitmap_set(stats_bitmap->bitmap, last_i,
3032                            NUM_PF_STATS);
3033         last_i += NUM_PF_STATS;
3034
3035         mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
3036                                         rx_ppp, rx_pause,
3037                                         tx_ppp, tx_pause);
3038         last_i += NUM_FLOW_STATS;
3039
3040         if (!mlx4_is_slave(dev))
3041                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS);
3042 }
3043
3044 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
3045                         struct mlx4_en_port_profile *prof)
3046 {
3047         struct net_device *dev;
3048         struct mlx4_en_priv *priv;
3049         int i;
3050         int err;
3051 #ifdef CONFIG_MLX4_EN_DCB
3052         struct tc_configuration *tc;
3053 #endif
3054
3055         dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
3056                                  MAX_TX_RINGS, MAX_RX_RINGS);
3057         if (dev == NULL)
3058                 return -ENOMEM;
3059
3060         netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
3061         netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
3062
3063         SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev);
3064         dev->dev_port = port - 1;
3065
3066         /*
3067          * Initialize driver private data
3068          */
3069
3070         priv = netdev_priv(dev);
3071         memset(priv, 0, sizeof(struct mlx4_en_priv));
3072         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
3073         spin_lock_init(&priv->stats_lock);
3074         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
3075         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
3076         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
3077         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
3078         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
3079         INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads);
3080         INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads);
3081 #ifdef CONFIG_RFS_ACCEL
3082         INIT_LIST_HEAD(&priv->filters);
3083         spin_lock_init(&priv->filters_lock);
3084 #endif
3085
3086         priv->dev = dev;
3087         priv->mdev = mdev;
3088         priv->ddev = &mdev->pdev->dev;
3089         priv->prof = prof;
3090         priv->port = port;
3091         priv->port_up = false;
3092         priv->flags = prof->flags;
3093         priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
3094         priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
3095                         MLX4_WQE_CTRL_SOLICITED);
3096         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
3097         priv->tx_ring_num = prof->tx_ring_num;
3098         priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
3099         netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key));
3100
3101         priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS,
3102                                 GFP_KERNEL);
3103         if (!priv->tx_ring) {
3104                 err = -ENOMEM;
3105                 goto out;
3106         }
3107         priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS,
3108                               GFP_KERNEL);
3109         if (!priv->tx_cq) {
3110                 err = -ENOMEM;
3111                 goto out;
3112         }
3113         priv->rx_ring_num = prof->rx_ring_num;
3114         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
3115         priv->cqe_size = mdev->dev->caps.cqe_size;
3116         priv->mac_index = -1;
3117         priv->msg_enable = MLX4_EN_MSG_LEVEL;
3118 #ifdef CONFIG_MLX4_EN_DCB
3119         if (!mlx4_is_slave(priv->mdev->dev)) {
3120                 priv->cee_params.dcbx_cap = DCB_CAP_DCBX_VER_CEE |
3121                                             DCB_CAP_DCBX_HOST |
3122                                             DCB_CAP_DCBX_VER_IEEE;
3123                 priv->flags |= MLX4_EN_DCB_ENABLED;
3124                 priv->cee_params.dcb_cfg.pfc_state = false;
3125
3126                 for (i = 0; i < MLX4_EN_NUM_UP; i++) {
3127                         tc = &priv->cee_params.dcb_cfg.tc_config[i];
3128                         tc->dcb_pfc = pfc_disabled;
3129                 }
3130
3131                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
3132                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
3133                 } else {
3134                         en_info(priv, "enabling only PFC DCB ops\n");
3135                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
3136                 }
3137         }
3138 #endif
3139
3140         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
3141                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
3142
3143         /* Query for default mac and max mtu */
3144         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
3145
3146         if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
3147             MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
3148                 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
3149
3150         /* Set default MAC */
3151         dev->addr_len = ETH_ALEN;
3152         mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
3153         if (!is_valid_ether_addr(dev->dev_addr)) {
3154                 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
3155                        priv->port, dev->dev_addr);
3156                 err = -EINVAL;
3157                 goto out;
3158         } else if (mlx4_is_slave(priv->mdev->dev) &&
3159                    (priv->mdev->dev->port_random_macs & 1 << priv->port)) {
3160                 /* Random MAC was assigned in mlx4_slave_cap
3161                  * in mlx4_core module
3162                  */
3163                 dev->addr_assign_type |= NET_ADDR_RANDOM;
3164                 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
3165         }
3166
3167         memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
3168
3169         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
3170                                           DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
3171         err = mlx4_en_alloc_resources(priv);
3172         if (err)
3173                 goto out;
3174
3175         /* Initialize time stamping config */
3176         priv->hwtstamp_config.flags = 0;
3177         priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
3178         priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
3179
3180         /* Allocate page for receive rings */
3181         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
3182                                 MLX4_EN_PAGE_SIZE);
3183         if (err) {
3184                 en_err(priv, "Failed to allocate page for rx qps\n");
3185                 goto out;
3186         }
3187         priv->allocated = 1;
3188
3189         /*
3190          * Initialize netdev entry points
3191          */
3192         if (mlx4_is_master(priv->mdev->dev))
3193                 dev->netdev_ops = &mlx4_netdev_ops_master;
3194         else
3195                 dev->netdev_ops = &mlx4_netdev_ops;
3196         dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
3197         netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
3198         netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
3199
3200         dev->ethtool_ops = &mlx4_en_ethtool_ops;
3201
3202         /*
3203          * Set driver features
3204          */
3205         dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
3206         if (mdev->LSO_support)
3207                 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
3208
3209         dev->vlan_features = dev->hw_features;
3210
3211         dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
3212         dev->features = dev->hw_features | NETIF_F_HIGHDMA |
3213                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
3214                         NETIF_F_HW_VLAN_CTAG_FILTER;
3215         dev->hw_features |= NETIF_F_LOOPBACK |
3216                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
3217
3218         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) {
3219                 dev->features |= NETIF_F_HW_VLAN_STAG_RX |
3220                         NETIF_F_HW_VLAN_STAG_FILTER;
3221                 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX;
3222         }
3223
3224         if (mlx4_is_slave(mdev->dev)) {
3225                 int phv;
3226
3227                 err = get_phv_bit(mdev->dev, port, &phv);
3228                 if (!err && phv) {
3229                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3230                         priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV;
3231                 }
3232         } else {
3233                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN &&
3234                     !(mdev->dev->caps.flags2 &
3235                       MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
3236                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3237         }
3238
3239         if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
3240                 dev->hw_features |= NETIF_F_RXFCS;
3241
3242         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
3243                 dev->hw_features |= NETIF_F_RXALL;
3244
3245         if (mdev->dev->caps.steering_mode ==
3246             MLX4_STEERING_MODE_DEVICE_MANAGED &&
3247             mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
3248                 dev->hw_features |= NETIF_F_NTUPLE;
3249
3250         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
3251                 dev->priv_flags |= IFF_UNICAST_FLT;
3252
3253         /* Setting a default hash function value */
3254         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
3255                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3256         } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
3257                 priv->rss_hash_fn = ETH_RSS_HASH_XOR;
3258         } else {
3259                 en_warn(priv,
3260                         "No RSS hash capabilities exposed, using Toeplitz\n");
3261                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3262         }
3263
3264         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3265                 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
3266                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3267                                     NETIF_F_GSO_PARTIAL;
3268                 dev->features    |= NETIF_F_GSO_UDP_TUNNEL |
3269                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3270                                     NETIF_F_GSO_PARTIAL;
3271                 dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
3272         }
3273
3274         mdev->pndev[port] = dev;
3275         mdev->upper[port] = NULL;
3276
3277         netif_carrier_off(dev);
3278         mlx4_en_set_default_moderation(priv);
3279
3280         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
3281         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
3282
3283         mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
3284
3285         /* Configure port */
3286         mlx4_en_calc_rx_buf(dev);
3287         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
3288                                     priv->rx_skb_size + ETH_FCS_LEN,
3289                                     prof->tx_pause, prof->tx_ppp,
3290                                     prof->rx_pause, prof->rx_ppp);
3291         if (err) {
3292                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
3293                        priv->port, err);
3294                 goto out;
3295         }
3296
3297         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3298                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
3299                 if (err) {
3300                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
3301                                err);
3302                         goto out;
3303                 }
3304         }
3305
3306         /* Init port */
3307         en_warn(priv, "Initializing port\n");
3308         err = mlx4_INIT_PORT(mdev->dev, priv->port);
3309         if (err) {
3310                 en_err(priv, "Failed Initializing port\n");
3311                 goto out;
3312         }
3313         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
3314
3315         /* Initialize time stamp mechanism */
3316         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
3317                 mlx4_en_init_timestamp(mdev);
3318
3319         queue_delayed_work(mdev->workqueue, &priv->service_task,
3320                            SERVICE_TASK_DELAY);
3321
3322         mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap,
3323                                  mdev->profile.prof[priv->port].rx_ppp,
3324                                  mdev->profile.prof[priv->port].rx_pause,
3325                                  mdev->profile.prof[priv->port].tx_ppp,
3326                                  mdev->profile.prof[priv->port].tx_pause);
3327
3328         err = register_netdev(dev);
3329         if (err) {
3330                 en_err(priv, "Netdev registration failed for port %d\n", port);
3331                 goto out;
3332         }
3333
3334         priv->registered = 1;
3335         devlink_port_type_eth_set(mlx4_get_devlink_port(mdev->dev, priv->port),
3336                                   dev);
3337
3338         return 0;
3339
3340 out:
3341         mlx4_en_destroy_netdev(dev);
3342         return err;
3343 }
3344
3345 int mlx4_en_reset_config(struct net_device *dev,
3346                          struct hwtstamp_config ts_config,
3347                          netdev_features_t features)
3348 {
3349         struct mlx4_en_priv *priv = netdev_priv(dev);
3350         struct mlx4_en_dev *mdev = priv->mdev;
3351         struct mlx4_en_port_profile new_prof;
3352         struct mlx4_en_priv *tmp;
3353         int port_up = 0;
3354         int err = 0;
3355
3356         if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
3357             priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
3358             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3359             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
3360                 return 0; /* Nothing to change */
3361
3362         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3363             (features & NETIF_F_HW_VLAN_CTAG_RX) &&
3364             (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
3365                 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
3366                 return -EINVAL;
3367         }
3368
3369         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
3370         if (!tmp)
3371                 return -ENOMEM;
3372
3373         mutex_lock(&mdev->state_lock);
3374
3375         memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
3376         memcpy(&new_prof.hwtstamp_config, &ts_config, sizeof(ts_config));
3377
3378         err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof);
3379         if (err)
3380                 goto out;
3381
3382         if (priv->port_up) {
3383                 port_up = 1;
3384                 mlx4_en_stop_port(dev, 1);
3385         }
3386
3387         en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n",
3388                 ts_config.rx_filter,
3389                 !!(features & NETIF_F_HW_VLAN_CTAG_RX));
3390
3391         mlx4_en_safe_replace_resources(priv, tmp);
3392
3393         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
3394                 if (features & NETIF_F_HW_VLAN_CTAG_RX)
3395                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3396                 else
3397                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3398         } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
3399                 /* RX time-stamping is OFF, update the RX vlan offload
3400                  * to the latest wanted state
3401                  */
3402                 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
3403                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3404                 else
3405                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3406         }
3407
3408         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
3409                 if (features & NETIF_F_RXFCS)
3410                         dev->features |= NETIF_F_RXFCS;
3411                 else
3412                         dev->features &= ~NETIF_F_RXFCS;
3413         }
3414
3415         /* RX vlan offload and RX time-stamping can't co-exist !
3416          * Regardless of the caller's choice,
3417          * Turn Off RX vlan offload in case of time-stamping is ON
3418          */
3419         if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
3420                 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
3421                         en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
3422                 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3423         }
3424
3425         if (port_up) {
3426                 err = mlx4_en_start_port(dev);
3427                 if (err)
3428                         en_err(priv, "Failed starting port\n");
3429         }
3430
3431 out:
3432         mutex_unlock(&mdev->state_lock);
3433         kfree(tmp);
3434         if (!err)
3435                 netdev_features_change(dev);
3436         return err;
3437 }